phy/rockchip: Use of_device_get_match_data()

Use of_device_get_match_data() to simplify the code.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
Link: https://lore.kernel.org/r/20220303014406.2059140-1-chi.minghao@zte.com.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/rockchip/phy-rockchip-dphy-rx0.c

@@ -327,7 +327,6 @@ static int rk_dphy_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	const struct rk_dphy_drv_data *drv_data;
 	struct phy_provider *phy_provider;
-	const struct of_device_id *of_id;
 	struct rk_dphy *priv;
 	struct phy *phy;
 	unsigned int i;
@@ -347,11 +346,7 @@ static int rk_dphy_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	of_id = of_match_device(rk_dphy_dt_ids, dev);
-	if (!of_id)
-		return -EINVAL;
-
-	drv_data = of_id->data;
+	drv_data = of_device_get_match_data(dev);
 	priv->drv_data = drv_data;
 	priv->clks = devm_kcalloc(&pdev->dev, drv_data->num_clks,
 				  sizeof(*priv->clks), GFP_KERNEL);