ASoC: codecs: jz4725b: 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/20190727150738.54764-18-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/jz4725b.c

@@ -545,15 +545,13 @@ static int jz4725b_codec_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct jz_icdc *icdc;
-	struct resource *mem;
 	int ret;
 
 	icdc = devm_kzalloc(dev, sizeof(*icdc), GFP_KERNEL);
 	if (!icdc)
 		return -ENOMEM;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	icdc->base = devm_ioremap_resource(dev, mem);
+	icdc->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(icdc->base))
 		return PTR_ERR(icdc->base);