!2306 [RoCE] Fix the WC cannot be polled occasionally after reseting

Merge Pull Request from: @stinft 
 
https://gitee.com/src-openeuler/rdma-core/issues/I83L7U 
 
Link:https://gitee.com/openeuler/kernel/pulls/2306

 

Reviewed-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>