staging: wlags49_h2: make return of 0 explicit

Delete unnecessary local variable whose value is always 0 and that hides
the fact that the result is always 0.

A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
local idexpression ret;
expression e;
position p;
@@

-ret = 0;
... when != ret = e
return
- ret
+ 0
  ;
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlags49_h2/wl_wext.c

@@ -159,15 +159,12 @@ static int hermes_set_tkip_keys(ltv_t *ltv, u16 key_idx, u8 *addr,
 /* Set up the LTV to clear the appropriate key */
 static int hermes_clear_tkip_keys(ltv_t *ltv, u16 key_idx, u8 *addr)
 {
-	int ret;
-
 	switch (key_idx) {
 	case 0:
 		if (!is_broadcast_ether_addr(addr)) {
 			ltv->len = 7;
 			ltv->typ = CFG_REMOVE_TKIP_MAPPED_KEY;
 			memcpy(&ltv->u.u8[0], addr, ETH_ALEN);
-			ret = 0;
 		}
 		break;
 	case 1:
@@ -178,13 +175,12 @@ static int hermes_clear_tkip_keys(ltv_t *ltv, u16 key_idx, u8 *addr)
 		ltv->typ = CFG_REMOVE_TKIP_DEFAULT_KEY;
 		ltv->u.u16[0] = cpu_to_le16(key_idx);
 
-		ret = 0;
 		break;
 	default:
 		break;
 	}
 
-	return ret;
+	return 0;
 }
 
 /* Set the WEP keys in the wl_private structure */
@@ -3027,13 +3023,10 @@ static int wireless_set_genie(struct net_device *dev,
 			      struct iw_point *data, char *extra)
 
 {
-	int   ret = 0;
-
 	/* We can't write this to the card, but apparently this
 	 * operation needs to succeed */
-	ret = 0;
 
-	return ret;
+	return 0;
 }
 /*============================================================================*/