staging: r8188eu: remove unneeded variable in rtw_wx_get_essid

Remove unneeded return variable that is initialized to 0 and not
assigned after.

Found using Coccinelle
Signed-off-by: Abdun Nihaal <abdun.nihaal@gmail.com>
Link: https://lore.kernel.org/r/d0208689dffce91c52afbd5938b2704a8b1b554e.1643466748.git.abdun.nihaal@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/os_dep/ioctl_linux.c

@@ -1383,7 +1383,7 @@ static int rtw_wx_get_essid(struct net_device *dev,
 			      struct iw_request_info *a,
 			      union iwreq_data *wrqu, char *extra)
 {
-	u32 len, ret = 0;
+	u32 len;
 	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
 	struct	mlme_priv	*pmlmepriv = &padapter->mlmepriv;
 	struct wlan_bssid_ex  *pcur_bss = &pmlmepriv->cur_network.network;
@@ -1399,7 +1399,7 @@ static int rtw_wx_get_essid(struct net_device *dev,
 	wrqu->essid.length = len;
 	wrqu->essid.flags = 1;
 
-	return ret;
+	return 0;
 }
 
 static int rtw_wx_set_rate(struct net_device *dev,