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of_net: Fix missing of_find_device_by_node ref count drop 

of_find_device_by_node takes a reference to the embedded struct device
which needs to be dropped after use.

Fixes: d01f449c00 ("of_net: add NVMEM support to of_get_mac_address")
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Štetiar 2019-05-13 11:41:39 +02:00 committed by David S. Miller
parent da86f59f17
commit 3ee9ae74ba
1 changed files with 4 additions and 1 deletions
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5
drivers/of/of_net.c
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@ -60,10 +60,13 @@ static const void *of_get_mac_addr_nvmem(struct device_node *np)
return ERR_PTR(-ENODEV);
ret = nvmem_get_mac_address(&pdev->dev, &nvmem_mac);
if (ret)
if (ret) {
put_device(&pdev->dev);
return ERR_PTR(ret);
}
mac = devm_kmemdup(&pdev->dev, nvmem_mac, ETH_ALEN, GFP_KERNEL);
put_device(&pdev->dev);
if (!mac)
return ERR_PTR(-ENOMEM);