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net: altera: Fix refcount leak in altera_tse_mdio_create 

Every iteration of for_each_child_of_node() decrements
the reference count of the previous node.
When break from a for_each_child_of_node() loop,
we need to explicitly call of_node_put() on the child node when
not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: bbd2190ce9 ("Altera TSE: Add main and header file for Altera Ethernet Driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220607041144.7553-1-linmq006@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Miaoqian Lin 2022-06-07 08:11:43 +04:00 committed by Jakub Kicinski
parent 2061ecfdf2
commit 11ec18b1d8
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/altera/altera_tse_main.c
View File

@ -163,7 +163,8 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id)
mdio = mdiobus_alloc();
if (mdio == NULL) {
netdev_err(dev, "Error allocating MDIO bus\n");
return -ENOMEM;
ret = -ENOMEM;
goto put_node;
}
mdio->name = ALTERA_TSE_RESOURCE_NAME;
@ -180,6 +181,7 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id)
mdio->id);
goto out_free_mdio;
}
of_node_put(mdio_node);
if (netif_msg_drv(priv))
netdev_info(dev, "MDIO bus %s: created\n", mdio->id);
@ -189,6 +191,8 @@ static int altera_tse_mdio_create(struct net_device *dev, unsigned int id)
out_free_mdio:
mdiobus_free(mdio);
mdio = NULL;
put_node:
of_node_put(mdio_node);
return ret;
}