spi: spi-geni-qcom: 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/20190904135918.25352-14-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-geni-qcom.c

@@ -534,7 +534,6 @@ static int spi_geni_probe(struct platform_device *pdev)
 	int ret, irq;
 	struct spi_master *spi;
 	struct spi_geni_master *mas;
-	struct resource *res;
 	void __iomem *base;
 	struct clk *clk;
 
@@ -542,8 +541,7 @@ static int spi_geni_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return irq;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);