hwrng: bcm2835 - Simplify with of_device_get_match_data()

Driver's probe function matches against driver's of_device_id table,
where each entry has non-NULL match data, so of_match_node() can be
simplified with of_device_get_match_data().

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Author: krzk

drivers/char/hw_random/bcm2835-rng.c

@@ -142,9 +142,7 @@ MODULE_DEVICE_TABLE(of, bcm2835_rng_of_match);
 
 static int bcm2835_rng_probe(struct platform_device *pdev)
 {
-	const struct bcm2835_rng_of_data *of_data;
 	struct device *dev = &pdev->dev;
-	const struct of_device_id *rng_id;
 	struct bcm2835_rng_priv *priv;
 	int err;
 
@@ -172,12 +170,10 @@ static int bcm2835_rng_probe(struct platform_device *pdev)
 	priv->rng.cleanup = bcm2835_rng_cleanup;
 
 	if (dev_of_node(dev)) {
-		rng_id = of_match_node(bcm2835_rng_of_match, dev->of_node);
-		if (!rng_id)
-			return -EINVAL;
+		const struct bcm2835_rng_of_data *of_data;
 
 		/* Check for rng init function, execute it */
-		of_data = rng_id->data;
+		of_data = of_device_get_match_data(dev);
 		if (of_data)
 			priv->mask_interrupts = of_data->mask_interrupts;
 	}