regmap: Do debugfs init before cache init

This allows caches to add custom debugfs files.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 10ecbba..a862090 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -241,12 +241,12 @@
 		goto err_map;
 	}
 
+	regmap_debugfs_init(map);
+
 	ret = regcache_init(map, config);
 	if (ret < 0)
 		goto err_free_workbuf;
 
-	regmap_debugfs_init(map);
-
 	return map;
 
 err_free_workbuf: