vfio/type1: Fix error return code in vfio_iommu_type1_attach_group()

Wei Yongjun · joergroedel · commit 2c9f1af528a4 · 2017-02-10T15:09:11.000+01:00
Fix to return a negative error code from the error handling case instead of 0, as done elsewhere in this function. Fixes: 5d70499 ("vfio/type1: Allow transparent MSI IOVA allocation") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
@@ -1332,8 +1332,11 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
 	if (ret)
 		goto out_detach;
 
-	if (resv_msi && iommu_get_msi_cookie(domain->domain, resv_msi_base))
-		goto out_detach;
+	if (resv_msi) {
+		ret = iommu_get_msi_cookie(domain->domain, resv_msi_base);
+		if (ret)
+			goto out_detach;
+	}
 
 	list_add(&domain->next, &iommu->domain_list);
 
