[PATCH] net/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'

[Christophe JAILLET]

If an error occurs, 'mlx4_en_destroy_netdev()' is called.
It then calls 'mlx4_en_free_resources()' which does the needed resources
cleanup.

So, doing some explicit kfree in the error handling path would lead to
some double kfree.

Simplify code to avoid such a case.

Fixes: 67f8b1dcb9ee ("net/mlx4_en: Refactor the XDP forwarding rings scheme")
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c 
b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index e0adac4a9a19..9670b33fc9b1 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -3324,12 +3324,11 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int 
port,
                                           MAX_TX_RINGS, GFP_KERNEL);
                if (!priv->tx_ring[t]) {
                        err = -ENOMEM;
-                       goto err_free_tx;
+                       goto out;
                }
                priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
                                         MAX_TX_RINGS, GFP_KERNEL);
                if (!priv->tx_cq[t]) {
-                       kfree(priv->tx_ring[t]);
                        err = -ENOMEM;
                        goto out;
                }
@@ -3582,11 +3581,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int 
port,
 
        return 0;
 
-err_free_tx:
-       while (t--) {
-               kfree(priv->tx_ring[t]);
-               kfree(priv->tx_cq[t]);
-       }
 out:
        mlx4_en_destroy_netdev(dev);
        return err;
-- 
2.17.0