xfs: clean up broken eearly-exit code in the inode btree scrubber

Corrupt inode chunks should cause us to exit early after setting the
CORRUPT flag on the scrub state.  While we're at it, collapse trivial
helpers.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>

fs/xfs/scrub/ialloc.c

@@ -79,25 +79,7 @@ xchk_iallocbt_chunk_xref_other(
 		xchk_btree_xref_set_corrupt(sc, *pcur, 0);
 }
 
-/* Cross-reference with the other btrees. */
-STATIC void
-xchk_iallocbt_chunk_xref(
-	struct xfs_scrub		*sc,
-	struct xfs_inobt_rec_incore	*irec,
-	xfs_agino_t			agino,
-	xfs_agblock_t			agbno,
-	xfs_extlen_t			len)
-{
-	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
-		return;
-
-	xchk_xref_is_used_space(sc, agbno, len);
-	xchk_iallocbt_chunk_xref_other(sc, irec, agino);
-	xchk_xref_is_owned_by(sc, agbno, len, &XFS_RMAP_OINFO_INODES);
-	xchk_xref_is_not_shared(sc, agbno, len);
-}
-
-/* Is this chunk worth checking? */
+/* Is this chunk worth checking and cross-referencing? */
 STATIC bool
 xchk_iallocbt_chunk(
 	struct xchk_btree		*bs,
@@ -105,17 +87,24 @@ xchk_iallocbt_chunk(
 	xfs_agino_t			agino,
 	xfs_extlen_t			len)
 {
+	struct xfs_scrub		*sc = bs->sc;
 	struct xfs_mount		*mp = bs->cur->bc_mp;
 	struct xfs_perag		*pag = bs->cur->bc_ag.pag;
-	xfs_agblock_t			bno;
+	xfs_agblock_t			agbno;
 
-	bno = XFS_AGINO_TO_AGBNO(mp, agino);
+	agbno = XFS_AGINO_TO_AGBNO(mp, agino);
 
-	if (!xfs_verify_agbext(pag, bno, len))
+	if (!xfs_verify_agbext(pag, agbno, len))
 		xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
-	xchk_iallocbt_chunk_xref(bs->sc, irec, agino, bno, len);
-	xchk_xref_is_not_cow_staging(bs->sc, bno, len);
+	if (bs->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
+		return false;
+
+	xchk_xref_is_used_space(sc, agbno, len);
+	xchk_iallocbt_chunk_xref_other(sc, irec, agino);
+	xchk_xref_is_owned_by(sc, agbno, len, &XFS_RMAP_OINFO_INODES);
+	xchk_xref_is_not_shared(sc, agbno, len);
+	xchk_xref_is_not_cow_staging(sc, agbno, len);
 	return true;
 }
 
@@ -463,7 +452,7 @@ xchk_iallocbt_rec(
 		if (holemask & 1)
 			holecount += XFS_INODES_PER_HOLEMASK_BIT;
 		else if (!xchk_iallocbt_chunk(bs, &irec, agino, len))
-			break;
+			goto out;
 		holemask >>= 1;
 		agino += XFS_INODES_PER_HOLEMASK_BIT;
 	}
@@ -473,6 +462,9 @@ xchk_iallocbt_rec(
 		xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
 
 check_clusters:
+	if (bs->sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
+		goto out;
+
 	error = xchk_iallocbt_check_clusters(bs, &irec);
 	if (error)
 		goto out;