hwrng: omap - Use pm_runtime_resume_and_get() to replace open coding

use 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.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/char/hw_random/omap-rng.c

@@ -454,10 +454,9 @@ static int omap_rng_probe(struct platform_device *pdev)
 	}
 
 	pm_runtime_enable(&pdev->dev);
-	ret = pm_runtime_get_sync(&pdev->dev);
+	ret = pm_runtime_resume_and_get(&pdev->dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Failed to runtime_get device: %d\n", ret);
-		pm_runtime_put_noidle(&pdev->dev);
 		goto err_ioremap;
 	}
 
@@ -543,10 +542,9 @@ static int __maybe_unused omap_rng_resume(struct device *dev)
 	struct omap_rng_dev *priv = dev_get_drvdata(dev);
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0) {
 		dev_err(dev, "Failed to runtime_get device: %d\n", ret);
-		pm_runtime_put_noidle(dev);
 		return ret;
 	}