net: hns3: modify hclge_func_reset_sync_vf()'s return type to void

driver inclusion
category: bugfix
bugzilla: NA
CVE: NA

When synchronizes with VFs fail before PF function reset,
PF driver should go on its function reset, otherwise it
can not run normally anymore. So, hclge_func_reset_sync_vf()
should not affect the processing of PF reset, this patch
modifies its return type to void.

Also, synchronizes some codes from kernel-dev branch.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Reviewed-by: Jian Shen <shenjian15@huawei.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Zhong Zhaohui <zhongzhaohui@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>