staging: rtl8192u: remove unecessary variable

This patch removes unncessary variable in file r8192U_core.c
using Coccinelle. Semantic patch for this is as follows :
@@
identifier ret;
@@

-int ret = 0;
 ... when != ret
     when strict
-return ret;
+return 0;
Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/r8192U_core.c

@@ -1911,19 +1911,18 @@ static int rtl8192_handle_beacon(struct net_device *dev,
 static int rtl8192_qos_association_resp(struct r8192_priv *priv,
 					struct ieee80211_network *network)
 {
-	int ret = 0;
 	unsigned long flags;
 	u32 size = sizeof(struct ieee80211_qos_parameters);
 	int set_qos_param = 0;
 
 	if ((priv == NULL) || (network == NULL))
-		return ret;
+		return 0;
 
 	if (priv->ieee80211->state != IEEE80211_LINKED)
-		return ret;
+		return 0;
 
 	if ((priv->ieee80211->iw_mode != IW_MODE_INFRA))
-		return ret;
+		return 0;
 
 	spin_lock_irqsave(&priv->ieee80211->lock, flags);
 	if (network->flags & NETWORK_HAS_QOS_PARAMETERS) {
@@ -1952,7 +1951,7 @@ static int rtl8192_qos_association_resp(struct r8192_priv *priv,
 		queue_work(priv->priv_wq, &priv->qos_activate);
 
 
-	return ret;
+	return 0;
 }