ASoC: Fix widget powerdown on shutdown

We need to set the widget power state we want to implement.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index b9129ef..5157ec1 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2045,6 +2045,7 @@
 	list_for_each_entry(w, &codec->dapm_widgets, list) {
 		if (w->power) {
 			dapm_seq_insert(w, &down_list, dapm_down_seq);
+			w->power = 0;
 			powerdown = 1;
 		}
 	}