wifi: mt76: mt76x02: fix return value check in mt76x02_mac_process_rx

in mt76x02_mac_process_rx(), return an error code if an
unexpected result is returned by pskb_trim.
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x02_mac.c

@@ -853,7 +853,8 @@ int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
 	if (WARN_ON_ONCE(len > skb->len))
 		return -EINVAL;
 
-	pskb_trim(skb, len);
+	if (pskb_trim(skb, len))
+		return -EINVAL;
 
 	status->chains = BIT(0);
 	signal = mt76x02_mac_get_rssi(dev, rxwi->rssi[0], 0);