Fix user authentication persistence

pwd/user.go

@@ -26,21 +26,19 @@ func (p *pwd) UserLogin(loginRequest *types.LoginRequest, user *types.User) (*ty
 		return nil, err
 	}
 	u, err := p.storage.UserFindByProvider(user.Provider, user.ProviderUserId)
+
 	if err != nil {
 		if storage.NotFound(err) {
 			user.Id = p.generator.NewId()
-		} else {
-			return nil, err
-		}
-	} else {
-		user.Id = u.Id
-	}
 			if err := p.storage.UserPut(user); err != nil {
 				return nil, err
 			}
-
 			return user, nil
 		}
+		return nil, err
+	}
+	return u, nil
+}
 func (p *pwd) UserGet(id string) (*types.User, error) {
 	if user, err := p.storage.UserGet(id); err != nil {
 		return nil, err