[XFS] set b_error from bio error in xfs_buf_bio_end_io
[XFS] set b_error from bio error in xfs_buf_bio_end_io

Preserve any error returned by the bio layer.

Reviewed-by: Eric Sandeen <d55521028c14e0f378be5444e4ea388161c0d7e7@sandeen.net>
Reviewed-by: Tim Shimmin <d1c056a983786a38ca76a05cda240c7b86d77136@sgi.com>
Signed-off-by: Lachlan McIlroy <f5e96ceb240f4c6b121fe0445b266d7666b5fe0e@sgi.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs