save newly created users directly in the model

app/controllers/omniauth_callbacks_controller.rb

@@ -39,7 +39,6 @@ class OmniauthCallbacksController < Devise::OmniauthCallbacksController
       redirect_to profile_path
     else
       @user = User.find_or_new_for_omniauth(oauth)
-      @user.save! if @user.try('new_record?')
 
       if @user
         sign_in_and_redirect @user

app/models/user.rb

@@ -114,6 +114,8 @@ class User < ActiveRecord::Base
         )
 
         @user.blocked = true if Gitlab.config.omniauth.block_auto_created_users
+        @user.save!
+
         @user
       end
     end