f2fs: add trace exit in exception path

[ Upstream commit 9b66482282888d02832b7d90239e1cdb18e4b431 ]

Missing the trace exit in f2fs_sync_dirty_inodes

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>