Staging: rtl8723bs: core: Replace return types

Remove unwanted assignments and replace return types.

Issue suggested by Coccinelle.
Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_sta_mgt.c

@@ -204,8 +204,7 @@ struct	sta_info *rtw_alloc_stainfo(struct	sta_priv *pstapriv, u8 *hwaddr)
 	if (list_empty(&pfree_sta_queue->queue)) {
 		/* spin_unlock_bh(&(pfree_sta_queue->lock)); */
 		spin_unlock_bh(&(pstapriv->sta_hash_lock));
-		psta = NULL;
-		return psta;
+		return NULL;
 	} else {
 		psta = LIST_CONTAINOR(get_next(&pfree_sta_queue->queue), struct sta_info, list);
 
@@ -586,12 +585,10 @@ u32 rtw_init_bcmc_stainfo(struct adapter *padapter)
 
 struct sta_info *rtw_get_bcmc_stainfo(struct adapter *padapter)
 {
-	struct sta_info *psta;
 	struct sta_priv *pstapriv = &padapter->stapriv;
 	u8 bc_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 
-	psta = rtw_get_stainfo(pstapriv, bc_addr);
-	return psta;
+	return rtw_get_stainfo(pstapriv, bc_addr);
 }
 
 u8 rtw_access_ctrl(struct adapter *padapter, u8 *mac_addr)