drivers/net: Remove alloc_etherdev error messages

alloc_etherdev has a generic OOM/unable to alloc message.
Remove the duplicative messages after alloc_etherdev calls.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c
index 134c4d0..4b551fe 100644
--- a/drivers/net/ethernet/micrel/ks8851.c
+++ b/drivers/net/ethernet/micrel/ks8851.c
@@ -1419,10 +1419,8 @@
 	int ret;
 
 	ndev = alloc_etherdev(sizeof(struct ks8851_net));
-	if (!ndev) {
-		dev_err(&spi->dev, "failed to alloc ethernet device\n");
+	if (!ndev)
 		return -ENOMEM;
-	}
 
 	spi->bits_per_word = 8;