graph: fix missing return after error in UpdateShare

services/graph/pkg/service/v0/driveitems.go

@@ -670,6 +670,7 @@ func (g Graph) UpdatePermission(w http.ResponseWriter, r *http.Request) {
 	updatedPermission, err := g.updateUserShare(ctx, permissionID, oldPermission, permission)
 	if err != nil {
 		errorcode.RenderError(w, r, err)
+		return
 	}
 	render.Status(r, http.StatusOK)
 	render.JSON(w, r, &updatedPermission)