bcachefs: Don't repair btree nodes until after interior journal replay is done

We need the btree to be in a consistent state before we can rewrite
btree nodes.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/btree_update_interior.c

@@ -1828,6 +1828,9 @@ void bch2_btree_node_rewrite_async(struct bch_fs *c, struct btree *b)
 {
 	struct async_btree_rewrite *a;
 
+	if (!test_bit(BCH_FS_BTREE_INTERIOR_REPLAY_DONE, &c->flags))
+		return;
+
 	if (!percpu_ref_tryget(&c->writes))
 		return;