intel-iommu: Fix get_domain_for_dev() error path
If we run out of domain_ids and fail iommu_attach_domain(), we fall into domain_exit() without having setup enough of the domain structure for this to do anything useful. In fact, it typically runs off into the weeds walking the bogus domain->devices list. Just free the domain. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Donald Dutile <ddutile@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
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@ -1835,7 +1835,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
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ret = iommu_attach_domain(domain, iommu);
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if (ret) {
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domain_exit(domain);
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free_domain_mem(domain);
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goto error;
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}
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