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libata: ensure host is free'd on error exit paths 

The host structure is not being kfree'd on two error exit paths
leading to memory leaks. Add in new err_free label and kfree host.

Detected by CoverityScan, CID#1466103 ("Resource leak")

Fixes: 2623c7a5f2 ("libata: add refcounting to ata_host")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Colin Ian King 2018-03-27 14:26:01 +01:00 committed by Tejun Heo
parent f0f56716fc
commit dafd6c4963
1 changed files with 3 additions and 1 deletions
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4
drivers/ata/libata-core.c
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@ -6087,7 +6087,7 @@ struct ata_host *ata_host_alloc(struct device *dev, int max_ports)
return NULL;
if (!devres_open_group(dev, NULL, GFP_KERNEL))
return NULL;
goto err_free;
dr = devres_alloc(ata_devres_release, 0, GFP_KERNEL);
if (!dr)
@ -6119,6 +6119,8 @@ struct ata_host *ata_host_alloc(struct device *dev, int max_ports)
err_out:
devres_release_group(dev, NULL);
err_free:
kfree(host);
return NULL;
}