net: hns3: handle pending reset while reset fail

The ongoing lower-level reset will fail when there is a higher-level
reset occurs, so the error handler should deal with this situation.

Fixes: 6a5f6fa3 ("net: hns3: add error handler for hclgevf_reset()")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>