iommu/vt-d: Check the return value of iommu_device_create()
This adds the proper check to alloc_iommu to make sure that
the call to iommu_device_create has completed successfully
and if not return the error code to the caller after freeing
up resources allocated previously.
Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 80e3c17..add177a 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1070,6 +1070,12 @@
intel_iommu_groups,
"%s", iommu->name);
+ if (IS_ERR(iommu->iommu_dev)) {
+ drhd->iommu = NULL;
+ err = PTR_ERR(iommu->iommu_dev);
+ goto err_unmap;
+ }
+
return 0;
err_unmap: