[media] stk1160: remove unneeded check

"card" is a valid pointer here because we checked snd_card_create() for
error returns.  Checking after a dereference makes the static checkers
complain.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Ezequiel Garcia <elezegarcia@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/stk1160/stk1160-ac97.c

@@ -133,8 +133,7 @@ int stk1160_ac97_register(struct stk1160 *dev)
 
 err:
 	dev->snd_card = NULL;
-	if (card)
-		snd_card_free(card);
+	snd_card_free(card);
 	return rc;
 }