net: hisilicon: hns: fix error return code of hns_nic_clear_all_rx_fetch()

When hns_assemble_skb() returns NULL to skb, no error return code of
hns_nic_clear_all_rx_fetch() is assigned.
To fix this bug, ret is assigned with -ENOMEM in this case.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 5d7824d..c66a7a5 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1663,8 +1663,10 @@ static int hns_nic_clear_all_rx_fetch(struct net_device *ndev)
                        for (j = 0; j < fetch_num; j++) {
                                /* alloc one skb and init */
                                skb = hns_assemble_skb(ndev);
-                               if (!skb)
+                               if (!skb) {
+                                       ret = -ENOMEM;
                                        goto out;
+                               }
                                rd = &tx_ring_data(priv, skb->queue_mapping);
                                hns_nic_net_xmit_hw(ndev, skb, rd);