gfs2: Use gfs2_holder_initialized for jindex

Before this patch function init_journal() used a local variable jindex to
keep track of whether it needed to dequeue the jindex holder when errors
were found. It also uselessly set the variable just before returning from
the function. This patch simplifies the code by eliminatinng the local
variable in favor of using function gfs2_holder_initialized.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

fs/gfs2/ops_fstype.c

@@ -734,13 +734,11 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
 	struct inode *master = d_inode(sdp->sd_master_dir);
 	struct gfs2_holder ji_gh;
 	struct gfs2_inode *ip;
-	int jindex = 1;
 	int error = 0;
 
-	if (undo) {
-		jindex = 0;
+	gfs2_holder_mark_uninitialized(&ji_gh);
+	if (undo)
 		goto fail_statfs;
-	}
 
 	sdp->sd_jindex = gfs2_lookup_simple(master, "jindex");
 	if (IS_ERR(sdp->sd_jindex)) {
@@ -852,7 +850,6 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
 	sdp->sd_log_idle = 1;
 	set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
 	gfs2_glock_dq_uninit(&ji_gh);
-	jindex = 0;
 	INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func);
 	return 0;
 
@@ -869,7 +866,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
 		gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
 fail_jindex:
 	gfs2_jindex_free(sdp);
-	if (jindex)
+	if (gfs2_holder_initialized(&ji_gh))
 		gfs2_glock_dq_uninit(&ji_gh);
 fail:
 	iput(sdp->sd_jindex);