afs: fix the afs_dir_get_folio return value

Keep returning NULL on failure instead of letting an ERR_PTR escape to
callers that don't expect it.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Signed-off-by: Christoph Hellwig <[email protected]>
Reported-by: Jan Kara <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Reviewed-by: David Howells <[email protected]>
Tested-by: David Howells <[email protected]>
Cc: Marc Dionne <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions