net: wireless: realtek: rtlwifi: usb: don't print error when allocating urb fails

kmalloc will print enough information in case of failure.
Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/realtek/rtlwifi/usb.c

@@ -739,11 +739,8 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
 	for (i = 0; i < rtlusb->rx_urb_num; i++) {
 		err = -ENOMEM;
 		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (!urb) {
-			RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
-				 "Failed to alloc URB!!\n");
+		if (!urb)
 			goto err_out;
-		}
 
 		err = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
 		if (err < 0) {
@@ -907,15 +904,12 @@ static void _rtl_tx_complete(struct urb *urb)
 static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
 				struct sk_buff *skb, u32 ep_num)
 {
-	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
 	struct urb *_urb;
 
 	WARN_ON(NULL == skb);
 	_urb = usb_alloc_urb(0, GFP_ATOMIC);
 	if (!_urb) {
-		RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
-			 "Can't allocate URB for bulk out!\n");
 		kfree_skb(skb);
 		return NULL;
 	}