ASoC:topology:delete dynamic object during widget remove

remove the dynamic object during the topology free stage.
to avoid multi remove operation.

Signed-off-by: Wu Zhigang <zhigang.wu@linux.intel.com>

sound/soc/soc-topology.c

@@ -491,6 +491,7 @@ static void remove_widget(struct snd_soc_component *comp,
 	}
 
 free_news:
+	list_del(&dobj->list);
 	kfree(w->kcontrol_news);
 
 	/* widget w is freed by soc-dapm.c */