iommu/amd: Free domain ID after domain_flush_pages

free_io_pgtable_ops() path uses domain ID to flush pages. Hence
free domain ID after flushing everything.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220912063248.7909-4-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

Author: hegdevasant

drivers/iommu/amd/iommu.c

@@ -2004,12 +2004,12 @@ static void protection_domain_free(struct protection_domain *domain)
 	if (!domain)
 		return;
 
-	if (domain->id)
-		domain_id_free(domain->id);
-
 	if (domain->iop.pgtbl_cfg.tlb)
 		free_io_pgtable_ops(&domain->iop.iop.ops);
 
+	if (domain->id)
+		domain_id_free(domain->id);
+
 	kfree(domain);
 }