net: hns3: fix incorrect return value/type of some functions

net: hns3: fix incorrect return value/type of some functions

There are some functions that, when they fail to send the command,
need to return the corresponding error value to its caller.

Fixes: 22c0e2ce21dd ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Fixes: 6113289e799c ("net: hns3: fix for vlan table lost problem when resetting")
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>