xfs: replace xfs_buf_geterror() with bp->b_error

Since we just checked bp for NULL, it is ok to replace
xfs_buf_geterror() with bp->b_error in these places.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index b9afff8..a199dbc 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -2133,7 +2133,7 @@
 			  buf_flags);
 	if (!bp)
 		return XFS_ERROR(ENOMEM);
-	error = xfs_buf_geterror(bp);
+	error = bp->b_error;
 	if (error) {
 		xfs_ioerror_alert("xlog_recover_do..(read#1)", mp,
 				  bp, buf_f->blf_blkno);
@@ -2228,7 +2228,7 @@
 		error = ENOMEM;
 		goto error;
 	}
-	error = xfs_buf_geterror(bp);
+	error = bp->b_error;
 	if (error) {
 		xfs_ioerror_alert("xlog_recover_do..(read#2)", mp,
 				  bp, in_f->ilf_blkno);