staging: r8188eu: convert rtw_init_mlme_priv() to common error logic

Convert the function rtw_init_mlme_priv() to common kernel error logic.
Return 0 on success and negative value on failure. This is part of
getting rid of returning _SUCCESS and _FAIL which uses inverted error
logic and is used all over the driver.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20221002074827.8566-5-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_mlme.c

@@ -224,7 +224,6 @@ int rtw_init_mlme_priv(struct adapter *padapter)/* struct	mlme_priv *pmlmepriv)
 	u8	*pbuf;
 	struct wlan_network	*pnetwork;
 	struct mlme_priv		*pmlmepriv = &padapter->mlmepriv;
-	int	res = _SUCCESS;
 
 	/*  We don't need to memset padapter->XXX to zero, because adapter is allocated by vzalloc(). */
 
@@ -245,10 +244,9 @@ int rtw_init_mlme_priv(struct adapter *padapter)/* struct	mlme_priv *pmlmepriv)
 
 	pbuf = vzalloc(MAX_BSS_CNT * (sizeof(struct wlan_network)));
 
-	if (!pbuf) {
-		res = _FAIL;
-		goto exit;
-	}
+	if (!pbuf)
+		return -ENOMEM;
+
 	pmlmepriv->free_bss_buf = pbuf;
 
 	pnetwork = (struct wlan_network *)pbuf;
@@ -265,9 +263,7 @@ int rtw_init_mlme_priv(struct adapter *padapter)/* struct	mlme_priv *pmlmepriv)
 
 	rtw_init_mlme_timer(padapter);
 
-exit:
-
-	return res;
+	return 0;
 }
 
 void rtw_free_mlme_priv(struct mlme_priv *pmlmepriv)

drivers/staging/r8188eu/os_dep/os_intfs.c

@@ -473,7 +473,7 @@ u8 rtw_init_drv_sw(struct adapter *padapter)
 		goto free_cmd_priv;
 	}
 
-	if (rtw_init_mlme_priv(padapter) == _FAIL) {
+	if (rtw_init_mlme_priv(padapter)) {
 		dev_err(dvobj_to_dev(padapter->dvobj), "rtw_init_mlme_priv failed\n");
 		goto free_evt_priv;
 	}