gpio: davinci: use devm_clk_get_enabled()

Simplify the code in error paths by using the managed variant of the
clock getter that controls the clock state as well.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240819151705.37258-2-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: Bartosz Golaszewski

drivers/gpio/gpio-davinci.c

@@ -446,7 +446,6 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 {
 	unsigned	gpio, bank;
 	int		irq;
-	int		ret;
 	struct clk	*clk;
 	u32		binten = 0;
 	unsigned	ngpio;
@@ -467,21 +466,16 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 
 	ngpio = chips->chip.ngpio;
 
-	clk = devm_clk_get(dev, "gpio");
+	clk = devm_clk_get_enabled(dev, "gpio");
 	if (IS_ERR(clk)) {
 		dev_err(dev, "Error %ld getting gpio clock\n", PTR_ERR(clk));
 		return PTR_ERR(clk);
 	}
 
-	ret = clk_prepare_enable(clk);
-	if (ret)
-		return ret;
-
 	if (chips->gpio_unbanked) {
 		irq = devm_irq_alloc_descs(dev, -1, 0, ngpio, 0);
 		if (irq < 0) {
 			dev_err(dev, "Couldn't allocate IRQ numbers\n");
-			clk_disable_unprepare(clk);
 			return irq;
 		}
 
@@ -490,7 +484,6 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 							chips);
 		if (!irq_domain) {
 			dev_err(dev, "Couldn't register an IRQ domain\n");
-			clk_disable_unprepare(clk);
 			return -ENODEV;
 		}
 	}
@@ -559,10 +552,8 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
 				       sizeof(struct
 					      davinci_gpio_irq_data),
 					      GFP_KERNEL);
-		if (!irqdata) {
-			clk_disable_unprepare(clk);
+		if (!irqdata)
 			return -ENOMEM;
-		}
 
 		irqdata->regs = g;
 		irqdata->bank_num = bank;