ASoC: core: cleanup platform debugfs on probe failure.

Make sure we cleanup the platform debugfs when probe fails.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 1bdc67e..29dbbd7 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1112,6 +1112,7 @@
 	return 0;
 
 err_probe:
+	soc_cleanup_platform_debugfs(platform);
 	module_put(platform->dev->driver->owner);
 
 	return ret;