mlx4_core: Check for DPDP violation only when DPDP is not supported

Move check for DPDP out of the loop to make the code more readable.
Signed-off-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NRoland Dreier <roland@purestorage.com>

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

@@ -171,9 +171,9 @@ int mlx4_check_port_params(struct mlx4_dev *dev,
 {
 	int i;
 
-	for (i = 0; i < dev->caps.num_ports - 1; i++) {
-		if (port_type[i] != port_type[i + 1]) {
-			if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+		for (i = 0; i < dev->caps.num_ports - 1; i++) {
+			if (port_type[i] != port_type[i + 1]) {
 				mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
 				return -EINVAL;
 			}