mlx4: use __vlan_hwaccel helpers

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/en_rx.c

@@ -875,7 +875,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 			skb->data_len = length;
 			napi_gro_frags(&cq->napi);
 		} else {
-			skb->vlan_tci = 0;
+			__vlan_hwaccel_clear_tag(skb);
 			skb_clear_hash(skb);
 		}
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