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/ppp/pptp.c b/drivers/net/ppp/pptp.c
index df884dd..234cd9d 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -670,10 +670,8 @@
 	pr_info("PPTP driver version " PPTP_DRIVER_VERSION "\n");
 
 	callid_sock = vzalloc((MAX_CALLID + 1) * sizeof(void *));
-	if (!callid_sock) {
-		pr_err("PPTP: cann't allocate memory\n");
+	if (!callid_sock)
 		return -ENOMEM;
-	}
 
 	err = gre_add_protocol(&gre_pptp_protocol, GREPROTO_PPTP);
 	if (err) {