ASoC: Set card->instantiated to false when removing the card

Set card->instantiated to false when the card is removed to make sure that
operations that expect the card to be fully instantiated do not run anymore
during card removal.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 1b422c5..ff9d289 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3810,8 +3810,10 @@
  */
 int snd_soc_unregister_card(struct snd_soc_card *card)
 {
-	if (card->instantiated)
+	if (card->instantiated) {
+		card->instantiated = false;
 		soc_cleanup_card_resources(card);
+	}
 	dev_dbg(card->dev, "ASoC: Unregistered card '%s'\n", card->name);
 
 	return 0;