usb: hso: no complaint about kmalloc failure

If this fails, kmalloc() will print a report including
a stack trace. There is no need for a separate complaint.
Signed-off-by: NOliver Neukum <oneukum@suse.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/usb/hso.c

@@ -2465,10 +2465,9 @@ static void hso_create_rfkill(struct hso_device *hso_dev,
 				       &interface_to_usbdev(interface)->dev,
 				       RFKILL_TYPE_WWAN,
 				       &hso_rfkill_ops, hso_dev);
-	if (!hso_net->rfkill) {
-		dev_err(dev, "%s - Out of memory\n", __func__);
+	if (!hso_net->rfkill)
 		return;
-	}
+
 	if (rfkill_register(hso_net->rfkill) < 0) {
 		rfkill_destroy(hso_net->rfkill);
 		hso_net->rfkill = NULL;