RDMA/hns:security review update

driver inclusion
category: cleanup
bugzilla: NA
CVE: NA

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This patch is dedicated to improve the reliability of code.

Reviewed-by: Hu Chunzhi <huchunzhi@huawei.com>
Reviewed-by: Wang Lin <wanglin137@huawei.com>
Reviewed-by: Zhao Weibo <zhaoweibo3@huawei.com>
Signed-off-by: Gao Xun <gaoxun3@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>