MKAnnotation doesn't appear - ios

Question

I'm writing flight ticket's app and have some troubles with map annotation's
So we have view, that showing all ticket information, and map with departure city and destination
Here's view loading :
override func viewDidLoad() {
super.viewDidLoad()
mapView.delegate = self
}
override func viewWillAppear(_ animated: Bool) {
configureView(showingReturnData: showingReturnData, fromTicket: showingTicketNow)
designSetup()
mapSetting()
}
Converting to coordinates :
func gettingCoordinates(cityString: String) -> CLLocationCoordinate2D {
let geocoder = CLGeocoder()
var returningCoordinate = CLLocationCoordinate2D()
geocoder.geocodeAddressString(cityString) { (placemarksArray, error) in
if error == nil && placemarksArray?.count != 0 {
let placemark = placemarksArray![0]
print(placemark.country, placemark.name,
placemark.location!.coordinate.longitude,
placemark.location!.coordinate.latitude)
//Here output:
Optional("Japan") Optional("Tokyo") 139.6917 35.689506
Optional("Russia") Optional("Moscow") 37.60946 55.7615902
returningCoordinate.longitude = placemark.location!.coordinate.longitude
returningCoordinate.latitude = placemark.location!.coordinate.latitude
} else {
print(error!)
}
}
return returningCoordinate
}
And then adding annotations to map, but It's always the same place, near Africa in ocean
func mapSetting() {
let fromPlacemark = gettingCoordinates(cityString: showingTicketNow.fromCityName)
let toPlacemark = gettingCoordinates(cityString: showingTicketNow.toCityName)
let fromAnnotation = MKPointAnnotation()
fromAnnotation.title = fromCityName.text!
fromAnnotation.coordinate = fromPlacemark
mapView.addAnnotation(fromAnnotation)
let toAnnotation = MKPointAnnotation()
toAnnotation.title = toCityName.text!
toAnnotation.coordinate = toPlacemark
mapView.addAnnotation(toAnnotation)
let coordinateRegion = MKCoordinateRegion(center: toPlacemark, latitudinalMeters:
10000, longitudinalMeters: 10000)
mapView.setRegion(coordinateRegion, animated: true)
}
What i'm doing wrong?