staging: rtl8712: Make return of 0 explicit

Delete unnecessary local variable whose value is always 0 and
return 0 as the result.

The following Coccinelle script was used:

@@
identifier ret; expression E;
type T;
@@
(
- T ret;
|
- T ret = 0;
)

... when != \(ret=E
\|ret--\|ret++\|--ret\|++ret\|ret-=E\|ret+=E\|ret|=E\|ret&=E\)
(
?-ret = 0;
)
... when != \(ret=E
\|ret--\|ret++\|--ret\|++ret\|ret-=E\|ret+=E\|ret|=E\|ret&=E\)
(
return
- ret
+ 0
;
)

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/xmit_linux.c

@@ -161,19 +161,15 @@ int r8712_xmit_entry(_pkt *pkt, struct  net_device *pnetdev)
 	struct xmit_frame *pxmitframe = NULL;
 	struct _adapter *padapter = netdev_priv(pnetdev);
 	struct xmit_priv *pxmitpriv = &(padapter->xmitpriv);
-	int ret = 0;
 
 	if (!r8712_if_up(padapter)) {
-		ret = 0;
 		goto _xmit_entry_drop;
 	}
 	pxmitframe = r8712_alloc_xmitframe(pxmitpriv);
 	if (!pxmitframe) {
-		ret = 0;
 		goto _xmit_entry_drop;
 	}
 	if ((!r8712_update_attrib(padapter, pkt, &pxmitframe->attrib))) {
-		ret = 0;
 		goto _xmit_entry_drop;
 	}
 	padapter->ledpriv.LedControlHandler(padapter, LED_CTL_TX);
@@ -185,11 +181,11 @@ int r8712_xmit_entry(_pkt *pkt, struct  net_device *pnetdev)
 	}
 	pxmitpriv->tx_pkts++;
 	pxmitpriv->tx_bytes += pxmitframe->attrib.last_txcmdsz;
-	return ret;
+	return 0;
 _xmit_entry_drop:
 	if (pxmitframe)
 		r8712_free_xmitframe(pxmitpriv, pxmitframe);
 	pxmitpriv->tx_drop++;
 	dev_kfree_skb_any(pkt);
-	return ret;
+	return 0;
 }