sh_eth: simplify sh_eth_check_reset()

The *while* loop in this function  can be turned into a normal *for* loop.
And getting rid  of the  single return point saves us a few more LoCs...
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -962,20 +962,16 @@ static void sh_eth_set_default_cpu_data(struct sh_eth_cpu_data *cd)
 
 static int sh_eth_check_reset(struct net_device *ndev)
 {
-	int ret = 0;
-	int cnt = 100;
+	int cnt;
 
-	while (cnt > 0) {
+	for (cnt = 100; cnt > 0; cnt--) {
 		if (!(sh_eth_read(ndev, EDMR) & EDMR_SRST_GETHER))
-			break;
+			return 0;
 		mdelay(1);
-		cnt--;
-	}
-	if (cnt <= 0) {
-		netdev_err(ndev, "Device reset failed\n");
-		ret = -ETIMEDOUT;
 	}
-	return ret;
+
+	netdev_err(ndev, "Device reset failed\n");
+	return -ETIMEDOUT;
 }
 
 static int sh_eth_reset(struct net_device *ndev)