How to access current location and set that as initial location?

I have a Flutter app which requires location services. I have already implemented getting a users current location, permissions, etc...

My app has to position a marker on a map when first open based on the current location of the user. (This is what I need help with)

The user can later touch the map at any other point to place the marker at that point. (This I have already done)

I have successfully created a function which can retrieve the current location of a user like this, (Do note that that function is async)

Future<LatLng> get currentLocation async {
  Position pos = await Geolocator.getCurrentPosition(
    desiredAccuracy: LocationAccuracy.high,
  );
  return LatLng(pos.latitude, pos.longitude);
}

I currently have LatLng markerPoint = LatLng(12.9716, 77.5946); as my initial marker point inside of my HomePage like this,

class _HomePageState extends State<HomePage> {
  // Initial marker location
  LatLng markerPoint = LatLng(12.9716, 77.5946);
  ...

But I want the current location returned by my function to replace the values given here. I am unable to do something like LatLng markerPoint = await _locationService.currentLocation; because I cannot make that part of the class async.

So, that's basically my problem. I want to initialise my variable through an asynchronous function, but I haven't found a way to do that since the area I am in, does not allow for async functions.

Help will be appreciated.

PS:

My remaining build function which sets the marker point whenever touched is over here for your reference.

@override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        FlutterMap(
          options: MapOptions(
            onTap: (tapPosition, point) async {
              setState(() {
                markerPoint = point;
              });
            },
            //
            center: markerPoint,
            zoom: 10.0,
            // this is required to disable rotation of the map
            // the map will behave wierd when you rotate it if it's deleted
            // the map will not scroll properly and not place markers at the exact locations.
            // if the below line in removed
            interactiveFlags: InteractiveFlag.all & ~InteractiveFlag.rotate,
          ),
          nonRotatedChildren: [
            TileLayer(
              urlTemplate: "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
              subdomains: const ['a', 'b', 'c'],
            ),
            MarkerLayer(
              markers: [
                Marker(
                  width: 100.0,
                  height: 100.0,
                  point: markerPoint,
                  builder: (ctx) => const Icon(
                    Icons.location_on,
                    color: Colors.red,
                    size: 40,
                  ),
                ),
              ],
            ),
          ],
        ),
        SafeArea(
          child: Padding(
            padding: const EdgeInsets.symmetric(horizontal: 16.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Card(
                  child: TextField(
                    decoration: const InputDecoration(
                      prefixIcon: Icon(Icons.location_on_outlined),
                      hintText: "Search for a location",
                      contentPadding: EdgeInsets.all(16.0),
                    ),
                    onTap: () async {
                      // This is here for debugging only, kindly ignore
                      await requestPermission();
                    },
                  ),
                ),
              ],
            ),
          ),
        ),
      ],
    );
  }

hope you are calling the get current location api in the initState() method

eg :

@override
void initState() {

    super.initState();
    fetchCurrentLocation();
   
  }

void fetchCurrentLocation() async{
 //calling the api
    var currentLocation = await _locationService.currentLocation; 

    //setState will update the values in real time
    setState(() {

      markerPoint = currentLocation

    });
}