diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 5c655a2a3809..32f8799db190 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -531,15 +531,14 @@ int mlx4_change_port_types(struct mlx4_dev *dev,
 	for (port = 0; port <  dev->caps.num_ports; port++) {
 		/* Change the port type only if the new type is different
 		 * from the current, and not set to Auto */
-		if (port_types[port] != dev->caps.port_type[port + 1]) {
+		if (port_types[port] != dev->caps.port_type[port + 1])
 			change = 1;
-			dev->caps.port_type[port + 1] = port_types[port];
-		}
 	}
 	if (change) {
 		mlx4_unregister_device(dev);
 		for (port = 1; port <= dev->caps.num_ports; port++) {
 			mlx4_CLOSE_PORT(dev, port);
+			dev->caps.port_type[port + 1] = port_types[port];
 			err = mlx4_SET_PORT(dev, port);
 			if (err) {
 				mlx4_err(dev, "Failed to set port %d, "