staging: rtl8712: _r8712_init_sta_priv(): Change return values

Add check for the return value of function _r8712_init_sta_priv at call
site.
Change return values of the function from _SUCCESS/_FAIL to 0/-ENOMEM
respectively.
Change return type of the function from u32 to int to enable return of
-ENOMEM.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/os_intfs.c

@@ -310,7 +310,8 @@ u8 r8712_init_drv_sw(struct _adapter *padapter)
 	       sizeof(struct security_priv));
 	timer_setup(&padapter->securitypriv.tkip_timer,
 		    r8712_use_tkipkey_handler, 0);
-	_r8712_init_sta_priv(&padapter->stapriv);
+	if (_r8712_init_sta_priv(&padapter->stapriv))
+		return _FAIL;
 	padapter->stapriv.padapter = padapter;
 	r8712_init_bcmc_stainfo(padapter);
 	r8712_init_pwrctrl_priv(padapter);

drivers/staging/rtl8712/rtl871x_sta_mgt.c

@@ -34,7 +34,7 @@ static void _init_stainfo(struct sta_info *psta)
 	INIT_LIST_HEAD(&psta->auth_list);
 }
 
-u32 _r8712_init_sta_priv(struct	sta_priv *pstapriv)
+int _r8712_init_sta_priv(struct	sta_priv *pstapriv)
 {
 	struct sta_info *psta;
 	s32 i;
@@ -42,7 +42,7 @@ u32 _r8712_init_sta_priv(struct	sta_priv *pstapriv)
 	pstapriv->pallocated_stainfo_buf = kmalloc(sizeof(struct sta_info) *
 						   NUM_STA + 4, GFP_ATOMIC);
 	if (!pstapriv->pallocated_stainfo_buf)
-		return _FAIL;
+		return -ENOMEM;
 	pstapriv->pstainfo_buf = pstapriv->pallocated_stainfo_buf + 4 -
 		((addr_t)(pstapriv->pallocated_stainfo_buf) & 3);
 	_init_queue(&pstapriv->free_sta_queue);
@@ -59,7 +59,7 @@ u32 _r8712_init_sta_priv(struct	sta_priv *pstapriv)
 	}
 	INIT_LIST_HEAD(&pstapriv->asoc_list);
 	INIT_LIST_HEAD(&pstapriv->auth_list);
-	return _SUCCESS;
+	return 0;
 }
 
 /* this function is used to free the memory of lock || sema for all stainfos */

drivers/staging/rtl8712/sta_info.h

@@ -119,7 +119,7 @@ static inline u32 wifi_mac_hash(u8 *mac)
 	return x;
 }
 
-u32 _r8712_init_sta_priv(struct sta_priv *pstapriv);
+int _r8712_init_sta_priv(struct sta_priv *pstapriv);
 void _r8712_free_sta_priv(struct sta_priv *pstapriv);
 struct sta_info *r8712_alloc_stainfo(struct sta_priv *pstapriv,
 				     u8 *hwaddr);