list_for_each_entry_safe(mapping, next, &bo_va->mappings, list) {
list_del(&mapping->list);
interval_tree_remove(&mapping->it, &vm->va);
list_for_each_entry_safe(mapping, next, &bo_va->mappings, list) {
list_del(&mapping->list);
interval_tree_remove(&mapping->it, &vm->va);