iio: imx7d_adc: Use devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to be able to drop a bit of
explicit boilerplate code.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/imx7d_adc.c

@@ -438,7 +438,6 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 {
 	struct imx7d_adc *info;
 	struct iio_dev *indio_dev;
-	struct resource *mem;
 	struct device *dev = &pdev->dev;
 	int irq;
 	int ret;
@@ -452,8 +451,7 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 	info = iio_priv(indio_dev);
 	info->dev = dev;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	info->regs = devm_ioremap_resource(dev, mem);
+	info->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(info->regs)) {
 		ret = PTR_ERR(info->regs);
 		dev_err(dev, "Failed to remap adc memory, err = %d\n", ret);