oprofile: don't bother with passing superblock to ->create_files()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
index 97c345f..ffc30ee 100644
--- a/drivers/oprofile/oprofile_files.c
+++ b/drivers/oprofile/oprofile_files.c
@@ -197,5 +197,5 @@
 #endif
 	oprofile_create_stats_files(root->d_sb, root);
 	if (oprofile_ops.create_files)
-		oprofile_ops.create_files(root->d_sb, root);
+		oprofile_ops.create_files(root);
 }