vfio_iommu_spapr_tce: Remove unneeded iommu_group_get_iommudata

This removes iommu_group_get_iommudata() as the result is never used.
As this is a minor cleanup, no change in behavior is expected.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

drivers/vfio/vfio_iommu_spapr_tce.c

@@ -331,14 +331,12 @@ static void tce_iommu_free_table(struct iommu_table *tbl);
 static void tce_iommu_release(void *iommu_data)
 {
 	struct tce_container *container = iommu_data;
-	struct iommu_table_group *table_group;
 	struct tce_iommu_group *tcegrp;
 	long i;
 
 	while (tce_groups_attached(container)) {
 		tcegrp = list_first_entry(&container->group_list,
 				struct tce_iommu_group, next);
-		table_group = iommu_group_get_iommudata(tcegrp->grp);
 		tce_iommu_detach_group(iommu_data, tcegrp->grp);
 	}