forcedeth: remove unnecessary carrier status check

Since netif_carrier_on() will do nothing if device's
carrier is already on, so it's unnecessary to do
carrier status check.

It's the same for netif_carrier_off().

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 978d329..aa912f4 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -4248,11 +4248,9 @@
 		/* We do not track link speed / duplex setting if the
 		 * interface is disabled. Force a link check */
 		if (nv_update_linkspeed(dev)) {
-			if (!netif_carrier_ok(dev))
-				netif_carrier_on(dev);
+			netif_carrier_on(dev);
 		} else {
-			if (netif_carrier_ok(dev))
-				netif_carrier_off(dev);
+			netif_carrier_off(dev);
 		}
 	}