net: hns3: Rectification of driver code review

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

-----------------------------

This patch is used to fix the Plastic overflow error,
and remove redundant code

Signed-off-by: youshengzui <youshengzui@huawei.com>
Reviewed-by: Weiwei Deng <dengweiwei@huawei.com>
Reviewed-by: Zhaohui Zhong <zhongzhaohui@huawei.com>
Reviewed-by: Junxin Chen <chenjunxin1@huawei.com>
Reviewed-by: Zhong Zhaohui <zhongzhaohui@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>