net: stmmac: dwmac-intel-plat: remove unnecessary initialization

plat_dat is initialized by stmmac_probe_config_dt().
So, initialization is not required by priv->plat.
This removes unnecessary initialization and variables.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c

@@ -74,8 +74,6 @@ MODULE_DEVICE_TABLE(of, intel_eth_plat_match);
 
 static int intel_eth_plat_probe(struct platform_device *pdev)
 {
-	struct net_device *ndev = platform_get_drvdata(pdev);
-	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct plat_stmmacenet_data *plat_dat;
 	struct stmmac_resources stmmac_res;
 	const struct of_device_id *match;
@@ -83,7 +81,6 @@ static int intel_eth_plat_probe(struct platform_device *pdev)
 	unsigned long rate;
 	int ret;
 
-	plat_dat = priv->plat;
 	ret = stmmac_get_platform_resources(pdev, &stmmac_res);
 	if (ret)
 		return ret;