mailbox: omap: using pm_runtime_resume_and_get to simplify the code

Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync and
pm_runtime_put_noidle. This change is just to simplify the code, no
actual functional changes.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ran jianping <ran.jianping@zte.com.cn>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/omap-mailbox.c

@@ -856,11 +856,9 @@ static int omap_mbox_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, mdev);
 	pm_runtime_enable(mdev->dev);
 
-	ret = pm_runtime_get_sync(mdev->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(mdev->dev);
+	ret = pm_runtime_resume_and_get(mdev->dev);
+	if (ret < 0)
 		goto unregister;
-	}
 
 	/*
 	 * just print the raw revision register, the format is not