update terrain validity all the time

src/modules/ekf2/EKF/control.cpp

@@ -912,6 +912,7 @@ void Ekf::controlHeightFusion()
 	if ((_control_status.flags.rng_hgt || _hagl_sensor_status.flags.range_finder) && _range_sensor.isDataHealthy()) {
 		fuseHaglAllStates();
 	}
+	updateTerrainValidity();
 }
 
 void Ekf::checkRangeAidSuitability()

src/modules/ekf2/EKF/terrain_estimator.cpp

@@ -366,5 +366,4 @@ void Ekf::fuseHaglAllStates()
 			_innov_check_fail_status.flags.reject_ver_pos = true;
 		}
 	}
-	updateTerrainValidity();
 }