f2fs: lost matching-pair of trace in f2fs_truncate_inode_blocks

if get_node_path() return -E2BIG and trace of
f2fs_truncate_inode_blocks_enter/exit enabled
then the matching-pair of trace_exit will lost
in log.
Signed-off-by: Yubo Feng <fengyubo3@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/node.c

@@ -1041,8 +1041,10 @@ int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from)
 	trace_f2fs_truncate_inode_blocks_enter(inode, from);
 
 	level = get_node_path(inode, from, offset, noffset);
-	if (level < 0)
+	if (level < 0) {
+		trace_f2fs_truncate_inode_blocks_exit(inode, level);
 		return level;
+	}
 
 	page = f2fs_get_node_page(sbi, inode->i_ino);
 	if (IS_ERR(page)) {