net: hns3: modify an incorrect error log in hclge_mbx_handler()

When handling HCLGE_MBX_GET_LINK_STATUS, PF will return the link
status to the VF, so the error log of hclge_get_link_info() is
incorrect.

Reported-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>