squashfs: fix locking bug in zlib wrapper

Fix locking bug in zlib wrapper introduced by recent decompressor changes.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c
index 15a03d0fb9f3..7a603874e483 100644
--- a/fs/squashfs/zlib_wrapper.c
+++ b/fs/squashfs/zlib_wrapper.c
@@ -128,8 +128,9 @@ static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
                 goto release_mutex;
         }
 
+        length = stream->total_out;
         mutex_unlock(&msblk->read_data_mutex);
-        return stream->total_out;
+        return length;
 
 release_mutex:
         mutex_unlock(&msblk->read_data_mutex);