drivers/rtc/rtc-max77686.c: fix incorrect return value on error

'ret' was not initialized to error code before returning. While
at it also remove some redundant code and cleanup.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Chiwoong Byun <woong.byun@samsung.com>
Cc: Jonghwa Lee <jonghwa3.lee@samsung.com>
Cc: Laxman dewangan <ldewangan@nvidia.com>
Cc: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-max77686.c

@@ -551,17 +551,17 @@ static int max77686_rtc_probe(struct platform_device *pdev)
 		goto err_rtc;
 	}
 	virq = irq_create_mapping(max77686->irq_domain, MAX77686_RTCIRQ_RTCA1);
-	if (!virq)
+	if (!virq) {
+		ret = -ENXIO;
 		goto err_rtc;
+	}
 	info->virq = virq;
 
 	ret = devm_request_threaded_irq(&pdev->dev, virq, NULL,
 				max77686_rtc_alarm_irq, 0, "rtc-alarm0", info);
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n",
 			info->virq, ret);
-		goto err_rtc;
-	}
 
 err_rtc:
 	return ret;