staging: rtl8188eu: remove padapter from struct mlme_ext_priv

struct mlme_ext_priv is an element of struct adapter. Use container_of
to get a pointer to the enclosing struct.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210505202622.11087-6-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/core/rtw_mlme_ext.c

@@ -4014,8 +4014,6 @@ int init_mlme_ext_priv(struct adapter *padapter)
 	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 	struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
 
-	pmlmeext->padapter = padapter;
-
 	init_mlme_ext_priv_value(padapter);
 	pmlmeinfo->accept_addba_req = pregistrypriv->accept_addba_req;
 
@@ -4038,7 +4036,7 @@ int init_mlme_ext_priv(struct adapter *padapter)
 
 void free_mlme_ext_priv(struct mlme_ext_priv *pmlmeext)
 {
-	struct adapter *padapter = pmlmeext->padapter;
+	struct adapter *padapter = container_of(pmlmeext, struct adapter, mlmeextpriv);
 
 	if (!padapter)
 		return;

drivers/staging/rtl8188eu/include/rtw_mlme_ext.h

@@ -383,7 +383,6 @@ struct p2p_oper_class_map {
 };
 
 struct mlme_ext_priv {
-	struct adapter	*padapter;
 	u8	mlmeext_init;
 	atomic_t	event_seq;
 	u16	mgnt_seq;