!944 nbd: get config_lock before sock_shutdown

Merge Pull Request from: @ci-robot 
 
PR sync from:  Zhong Jinghua <zhongjinghua@huawei.com>
 https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/thread/SH7IMWAMZDZBA352XEQZ4WD6CFY3EGCW/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/944

 

Reviewed-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>