ASoC: mmp-sspa: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190727150738.54764-19-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/pxa/mmp-sspa.c

@@ -399,7 +399,6 @@ static const struct snd_soc_component_driver mmp_sspa_component = {
 static int asoc_mmp_sspa_probe(struct platform_device *pdev)
 {
 	struct sspa_priv *priv;
-	struct resource *res;
 
 	priv = devm_kzalloc(&pdev->dev,
 				sizeof(struct sspa_priv), GFP_KERNEL);
@@ -417,8 +416,7 @@ static int asoc_mmp_sspa_probe(struct platform_device *pdev)
 	if (priv->dma_params == NULL)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->sspa->mmio_base = devm_ioremap_resource(&pdev->dev, res);
+	priv->sspa->mmio_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->sspa->mmio_base))
 		return PTR_ERR(priv->sspa->mmio_base);