erofs: simplify z_erofs_load_compact_lcluster()

- Get rid of unpack_compacted_index() and fold it into
   z_erofs_load_compact_lcluster();

 - Avoid a goto.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250114034429.431408-1-hsiangkao@linux.alibaba.com
This commit is contained in:
Gao Xiang 2025-01-14 11:44:26 +08:00
commit 2a810ea79c