ASoC: soc-core: use devm_snd_soc_register_card()

Using devm_snd_soc_register_card() can make the code
shorter and cleaner.
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20200929112933.46977-1-miaoqinglang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -1994,16 +1994,7 @@ static int soc_probe(struct platform_device *pdev)
 	/* Bodge while we unpick instantiation */
 	card->dev = &pdev->dev;
 
-	return snd_soc_register_card(card);
-}
-
-/* removes a socdev */
-static int soc_remove(struct platform_device *pdev)
-{
-	struct snd_soc_card *card = platform_get_drvdata(pdev);
-
-	snd_soc_unregister_card(card);
-	return 0;
+	return devm_snd_soc_register_card(&pdev->dev, card);
 }
 
 int snd_soc_poweroff(struct device *dev)
@@ -2047,7 +2038,6 @@ static struct platform_driver soc_driver = {
 		.pm		= &snd_soc_pm_ops,
 	},
 	.probe		= soc_probe,
-	.remove		= soc_remove,
 };
 
 /**