This reverts commit 
65e4113684e50cee75357ce10dc9026b0929e4e9.
Unlike the other cases Pavel fixed, this case did not
setup a netdev->destructor of free_netdev, therefore this
change was not correct.
Signed-off-by: David S. Miller <davem@davemloft.net>
                        list_del(&brdev->br2684_devs);
                        write_unlock_irq(&devs_lock);
                        unregister_netdev(net_dev);
+                       free_netdev(net_dev);
                }
                return;
        }
 
                list_del(&brdev->br2684_devs);
                unregister_netdev(net_dev);
+               free_netdev(net_dev);
        }
 }