net/hns3: fix error code in xstats

[ upstream commit dcb33fd ]

The ethdev API has processed the failure to obtain
xstats statistics. Therefore, driver should return
an error code instead of 0 in 'hns3_dev_xstats_get'
API.

Fixes: 8839c5e ("net/hns3: support device stats")

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>

drivers/net/hns3/hns3_stats.c

@@ -596,9 +596,9 @@ hns3_dev_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 	if (!hns->is_vf) {
 		/* Update Mac stats */
 		ret = hns3_query_update_mac_stats(dev);
-		if (ret) {
+		if (ret < 0) {
 			hns3_err(hw, "Update Mac stats fail : %d", ret);
-			return 0;
+			return ret;
 		}
 
 		/* Get MAC stats from hw->hw_xstats.mac_stats struct */