mlx4_en: Fix cleanup flow on cq activation

In case of mlx4_en_activate_cq() failure, the cleanup
code would go to rx_err and try to disable unactivated rings.
Signed-off-by: NYevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/mlx4/en_netdev.c

@@ -583,7 +583,7 @@ int mlx4_en_start_port(struct net_device *dev)
 		err = mlx4_en_activate_cq(priv, cq);
 		if (err) {
 			mlx4_err(mdev, "Failed activating Rx CQ\n");
-			goto rx_err;
+			goto cq_err;
 		}
 		for (j = 0; j < cq->size; j++)
 			cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;