net/mlx4_en: loopbacked packets are dropped when SMAC=DMAC

Should NOT check SMAC=DMAC when:
1. loopback is turned on
2. validate_loopback is true.

Fixed it accordingly.
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -614,8 +614,8 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 		/* If source MAC is equal to our own MAC and not performing
 		 * the selftest or flb disabled - drop the packet */
 		if (s_mac == priv->mac &&
-			(!(dev->features & NETIF_F_LOOPBACK) ||
-			 !priv->validate_loopback))
+		    !((dev->features & NETIF_F_LOOPBACK) ||
+		      priv->validate_loopback))
 			goto next;
 
 		/*