hwmon: (aspeed-pwm-tacho) Use devm_platform_ioremap_resource() in aspeed_pwm_tacho_probe()

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/cd5bab7b-9333-2a43-bcf0-a47bbbe719eb@web.deSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/aspeed-pwm-tacho.c

@@ -891,17 +891,12 @@ static int aspeed_pwm_tacho_probe(struct platform_device *pdev)
 	struct device_node *np, *child;
 	struct aspeed_pwm_tacho_data *priv;
 	void __iomem *regs;
-	struct resource *res;
 	struct device *hwmon;
 	struct clk *clk;
 	int ret;
 
 	np = dev->of_node;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENOENT;
-	regs = devm_ioremap_resource(dev, res);
+	regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);