drivers/net: Remove unnecessary k.alloc/v.alloc OOM messages

alloc failures use dump_stack so emitting an additional
out-of-memory message is an unnecessary duplication.

Remove the allocation failure messages.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 54f995f..09a5075 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -325,10 +325,8 @@
 	}
 
 	card = kzalloc(sizeof(card_t), GFP_KERNEL);
-	if (card == NULL) {
-		pr_err("unable to allocate memory\n");
+	if (card == NULL)
 		return -ENOBUFS;
-	}
 
 	card->dev = alloc_hdlcdev(card);
 	if (!card->dev) {