bcachefs: Fix an iterator error path

On transaction restart (-EINTR), we need to traverse all iterators.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/btree_iter.c

@@ -1027,10 +1027,7 @@ static int __btree_iter_traverse_all(struct btree_trans *trans,
 	for (i = 0; i < nr_sorted; i++) {
 		iter = &trans->iters[sorted[i]];
 
-		do {
-			ret = btree_iter_traverse_one(iter);
-		} while (ret == -EINTR);
-
+		ret = btree_iter_traverse_one(iter);
 		if (ret)
 			goto retry_all;
 	}