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iommu/vt-d: Fix sysfs leak in alloc_iommu()

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commit 0ee74d5a48635c848c20f152d0d488bf84641304 upstream.

iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequent
errors.

Fixes: 39ab9555c2 ("iommu: Add sysfs bindings for struct iommu_device")
Cc: stable@vger.kernel.org # 4.11.x
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/17411490.HIIP88n32C@mobilepool36.emlix.com
Link: https://lore.kernel.org/r/20210525070802.361755-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rolf Eike Beer
2021-05-25 15:08:02 +08:00
committed by Greg Kroah-Hartman
parent f989065218
commit f01134321d
1 changed files with 3 additions and 1 deletions
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4
drivers/iommu/intel/dmar.c
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@@ -1137,7 +1137,7 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
err = iommu_device_register(&iommu->iommu);
if (err)
goto err_unmap;
goto err_sysfs;
}
drhd->iommu = iommu;
@@ -1145,6 +1145,8 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
return 0;
err_sysfs:
iommu_device_sysfs_remove(&iommu->iommu);
err_unmap:
unmap_iommu(iommu);
error_free_seq_id: