In error path of f2fs_fill_super(), this patch fixes to call
f2fs_destroy_post_read_wq() once if we fail in f2fs_start_ckpt_thread().
Fixes: 261eeb9c1585 ("f2fs: introduce checkpoint_merge mount option")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
        f2fs_destroy_node_manager(sbi);
 free_sm:
        f2fs_destroy_segment_manager(sbi);
-       f2fs_destroy_post_read_wq(sbi);
 stop_ckpt_thread:
        f2fs_stop_ckpt_thread(sbi);
+       f2fs_destroy_post_read_wq(sbi);
 free_devices:
        destroy_device_list(sbi);
        kvfree(sbi->ckpt);