net/hns3: fix VF default MAC modified when set failed

[ upstream commit ed7faab2a717347077d9e657fba010bb145a2b54 ]

When the VF fail to set the default MAC address,
"hw->mac.mac_addr" should not be updated.

Fixes: a5475d6 ("net/hns3: support VF")

Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>

drivers/net/hns3/hns3_ethdev_vf.c

@@ -250,6 +250,8 @@ hns3vf_set_default_mac_addr(struct rte_eth_dev *dev,
 			hns3_err(hw, "Failed to set mac addr(%s) for vf: %d",
 				 mac_str, ret);
 		}
+		rte_spinlock_unlock(&hw->lock);
+		return ret;
 	}
 
 	rte_ether_addr_copy(mac_addr,