iommu/amd: Free domain id in error path

Call domain_id_free() in error path.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220912063248.7909-2-vasant.hegde@amd.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>