fix: fix ensureCreated of lvmVG via returning an error

The func does not return an error if there is an error and always return
nil. Fix the same via returning and error if there is a failure.

Signed-off-by: Nitin Goyal <nigoyal@redhat.com>

controllers/lvm_volumegroup.go

@@ -46,8 +46,9 @@ func (c lvmVG) ensureCreated(r *LVMClusterReconciler, ctx context.Context, lvmCl
 			return nil
 		})
 
-		if err != nil {
+		if err != nil && !errors.IsAlreadyExists(err) {
 			r.Log.Error(err, "failed to reconcile LVMVolumeGroup", "name", volumeGroup.Name)
+			return err
 		} else {
 			r.Log.Info("LVMVolumeGroup", "operation", result, "name", volumeGroup.Name)
 		}