bcachefs: Silence unimportant tracepoints

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/btree_iter.c

@@ -181,6 +181,8 @@ bool __bch2_btree_node_relock(struct btree_trans *trans,
 		return true;
 	}
 fail:
+	if (b != BTREE_ITER_NO_NODE_CACHED &&
+	    b != BTREE_ITER_NO_NODE_INIT)
 		trace_btree_node_relock_fail(trans->fn, _RET_IP_,
 					     path->btree_id,
 					     &path->pos,