squashfs: fix buffer release race condition in readahead code
Fix a buffer release race condition, where the error value was used after release. Link: https://lkml.kernel.org/r/20221020223616.7571-4-phillip@squashfs.org.uk Fixes: b09a7a03 ("squashfs: support reading fragments in readahead call") Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Reported-by: Marc Miltenberger <marcmiltenberger@gmail.com> Cc: Dimitri John Ledkov <dimitri.ledkov@canonical.com> Cc: Hsin-Yi Wang <hsinyi@chromium.org> Cc: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr> Cc: Slade Watkins <srw@sladewatkins.net> Cc: Thorsten Leemhuis <regressions@leemhuis.info> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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