[GFS2] vfree should be kfree

This was missed in an earlier patch when changing over from vmalloc
to kmalloc for the superblock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index f4397ce..e8b7a1a 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -769,7 +769,7 @@
 fail_sys:
 	gfs2_sys_fs_del(sdp);
 fail:
-	vfree(sdp);
+	kfree(sdp);
 	sb->s_fs_info = NULL;
 	return error;
 }