Don't fail if there is no error to add user to group

ldap/group.go

@@ -145,12 +145,12 @@ func (l Ldap) EmptyGroup(group string) error {
 // AddUserGroup add user into the group members
 func (l Ldap) AddUserGroup(user string, group string) error {
 	u, err := l.GetUser(user)
-	if !errors.Is(err, ErrNotFound) || u.Locked != Unlocked {
-		return ErrNotFound
-	}
 	if err != nil {
 		return err
 	}
+	if u.Locked != Unlocked {
+		return ErrNotFound
+	}
 
 	conn, err := l.connect()
 	if err != nil {