mlx4_core: Fix cleanup in __mlx4_init_one() error path

If mlx4_init_port_info() fails, cleanup the initialized ports only.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/net/mlx4/main.c

@@ -1174,7 +1174,7 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 	return 0;
 
 err_port:
-	for (port = 1; port <= dev->caps.num_ports; port++)
+	for (--port; port >= 1; --port)
 		mlx4_cleanup_port_info(&priv->port[port]);
 
 	mlx4_cleanup_mcg_table(dev);