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Commit bc847454 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/vt-d: Fix up error handling in alloc_iommu 



Only check for error when iommu->iommu_dev has been assigned
and only assign drhd->iommu when the function can't fail
anymore.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 59203379

drivers/iommu/dmar.c

+7 −7
Original line number Diff line number Diff line
@@ -1063,18 +1063,18 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd) 


	raw_spin_lock_init(&iommu->register_lock);



	drhd->iommu = iommu;



	if (intel_iommu_enabled)

	if (intel_iommu_enabled) {

		iommu->iommu_dev = iommu_device_create(NULL, iommu,

						       intel_iommu_groups,

						       "%s", iommu->name);



		if (IS_ERR(iommu->iommu_dev)) {

		drhd->iommu = NULL;

			err = PTR_ERR(iommu->iommu_dev);

			goto err_unmap;

		}

	}



	drhd->iommu = iommu;



	return 0;