Commit 
eab4e633 "xfs: uncached buffer reads need to return an error".
Remove redundant error variable, using the function level error variable
to store bp->b_error instead.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
        if (!bp)
                return EIO;
        if (bp->b_error) {
-               int     error = bp->b_error;
+               error = bp->b_error;
                xfs_buf_relse(bp);
                return error;
        }