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EDAC/highbank: Fix memory leak in highbank_mc_probe() 

When devres_open_group() fails, it returns -ENOMEM without freeing memory
allocated by edac_mc_alloc().

Call edac_mc_free() on the error handling path to avoid a memory leak.

  [ bp: Massage commit message. ]

Fixes: a1b01edb27 ("edac: add support for Calxeda highbank memory controller")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20221229054825.1361993-1-linmq006@gmail.com
This commit is contained in:
Miaoqian Lin 2022-12-29 09:48:24 +04:00 committed by Borislav Petkov (AMD)
parent e840774379
commit e7a293658c
1 changed files with 5 additions and 2 deletions
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7
drivers/edac/highbank_mc_edac.c
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@ -174,8 +174,10 @@ static int highbank_mc_probe(struct platform_device *pdev)
drvdata = mci->pvt_info;
platform_set_drvdata(pdev, mci);
if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL))
return -ENOMEM;
if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
res = -ENOMEM;
goto free;
}
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
@ -243,6 +245,7 @@ static int highbank_mc_probe(struct platform_device *pdev)
edac_mc_del_mc(&pdev->dev);
err:
devres_release_group(&pdev->dev, NULL);
free:
edac_mc_free(mci);
return res;
}