rtc: s5m: convert to dev_err_probe() where appropriate

dev_err_probe() exists to simplify code and harmonise error messages,
there's no reason not to use it here.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Link: https://lore.kernel.org/r/20250304-rtc-cleanups-v2-16-d4689a71668c@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Author: andred

drivers/rtc/rtc-s5m.c

@@ -626,11 +626,10 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info)
 	}
 
 	info->rtc_24hr_mode = 1;
-	if (ret < 0) {
-		dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
-			__func__, ret);
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(info->dev, ret,
+				     "%s: fail to write controlm reg\n",
+				     __func__);
 
 	return ret;
 }
@@ -669,38 +668,32 @@ static int s5m_rtc_probe(struct platform_device *pdev)
 		alarm_irq = S5M8767_IRQ_RTCA1;
 		break;
 	default:
-		dev_err(&pdev->dev,
-				"Device type %lu is not supported by RTC driver\n",
-				platform_get_device_id(pdev)->driver_data);
-		return -ENODEV;
+		return dev_err_probe(&pdev->dev, -ENODEV,
+				     "Device type %lu is not supported by RTC driver\n",
+				     platform_get_device_id(pdev)->driver_data);
 	}
 
 	i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter,
 					RTC_I2C_ADDR);
-	if (IS_ERR(i2c)) {
-		dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n");
-		return PTR_ERR(i2c);
-	}
+	if (IS_ERR(i2c))
+		return dev_err_probe(&pdev->dev, PTR_ERR(i2c),
+				     "Failed to allocate I2C for RTC\n");
 
 	info->regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
-	if (IS_ERR(info->regmap)) {
-		ret = PTR_ERR(info->regmap);
-		dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n",
-				ret);
-		return ret;
-	}
+	if (IS_ERR(info->regmap))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->regmap),
+				     "Failed to allocate RTC register map\n");
 
 	info->dev = &pdev->dev;
 	info->s5m87xx = s5m87xx;
 	info->device_type = platform_get_device_id(pdev)->driver_data;
 
 	if (s5m87xx->irq_data) {
 		info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq);
-		if (info->irq <= 0) {
-			dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n",
-				alarm_irq);
-			return -EINVAL;
-		}
+		if (info->irq <= 0)
+			return dev_err_probe(&pdev->dev, -EINVAL,
+					     "Failed to get virtual IRQ %d\n",
+					     alarm_irq);
 	}
 
 	platform_set_drvdata(pdev, info);
@@ -724,11 +717,10 @@ static int s5m_rtc_probe(struct platform_device *pdev)
 		ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL,
 						s5m_rtc_alarm_irq, 0, "rtc-alarm0",
 						info);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
-				info->irq, ret);
-			return ret;
-		}
+		if (ret < 0)
+			return dev_err_probe(&pdev->dev, ret,
+					     "Failed to request alarm IRQ %d\n",
+					     info->irq);
 		device_init_wakeup(&pdev->dev, true);
 	}