staging: rtl8712: Change return values of r8712_setdatarate_cmd()

Change the return values of function r8712_setdatarate_cmd from _SUCCESS
and _FAIL to 0 and -ENOMEM respectively.
Change the return type of the function from u8 to int to reflect this.
Change the call site of the function to check for 0 instead of _SUCCESS.
Return the value at the call site directly instead of storing it in a
return variable.
Remove now-unused return variable.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl871x_cmd.c

@@ -242,7 +242,7 @@ u8 r8712_sitesurvey_cmd(struct _adapter *padapter,
 	return _SUCCESS;
 }
 
-u8 r8712_setdatarate_cmd(struct _adapter *padapter, u8 *rateset)
+int r8712_setdatarate_cmd(struct _adapter *padapter, u8 *rateset)
 {
 	struct cmd_obj		*ph2c;
 	struct setdatarate_parm	*pbsetdataratepara;
@@ -250,18 +250,18 @@ u8 r8712_setdatarate_cmd(struct _adapter *padapter, u8 *rateset)
 
 	ph2c = kmalloc(sizeof(*ph2c), GFP_ATOMIC);
 	if (!ph2c)
-		return _FAIL;
+		return -ENOMEM;
 	pbsetdataratepara = kmalloc(sizeof(*pbsetdataratepara), GFP_ATOMIC);
 	if (!pbsetdataratepara) {
 		kfree(ph2c);
-		return _FAIL;
+		return -ENOMEM;
 	}
 	init_h2fwcmd_w_parm_no_rsp(ph2c, pbsetdataratepara,
 				   GEN_CMD_CODE(_SetDataRate));
 	pbsetdataratepara->mac_id = 5;
 	memcpy(pbsetdataratepara->datarates, rateset, NumRates);
 	r8712_enqueue_cmd(pcmdpriv, ph2c);
-	return _SUCCESS;
+	return 0;
 }
 
 u8 r8712_set_chplan_cmd(struct _adapter *padapter, int chplan)

drivers/staging/rtl8712/rtl871x_cmd.h

@@ -719,7 +719,7 @@ u8 r8712_joinbss_cmd(struct _adapter *padapter,
 u8 r8712_disassoc_cmd(struct _adapter *padapter);
 u8 r8712_setopmode_cmd(struct _adapter *padapter,
 		 enum NDIS_802_11_NETWORK_INFRASTRUCTURE networktype);
-u8 r8712_setdatarate_cmd(struct _adapter *padapter, u8 *rateset);
+int r8712_setdatarate_cmd(struct _adapter *padapter, u8 *rateset);
 u8 r8712_set_chplan_cmd(struct _adapter  *padapter, int chplan);
 u8 r8712_setbasicrate_cmd(struct _adapter *padapter, u8 *rateset);
 u8 r8712_getrfreg_cmd(struct _adapter *padapter, u8 offset, u8 *pval);

drivers/staging/rtl8712/rtl871x_ioctl_linux.c

@@ -1309,7 +1309,7 @@ static int r8711_wx_set_rate(struct net_device *dev,
 	u32 ratevalue = 0;
 	u8 datarates[NumRates];
 	u8 mpdatarate[NumRates] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0xff};
-	int i, ret = 0;
+	int i;
 
 	if (target_rate == -1) {
 		ratevalue = 11;
@@ -1367,9 +1367,7 @@ static int r8711_wx_set_rate(struct net_device *dev,
 			datarates[i] = 0xff;
 		}
 	}
-	if (r8712_setdatarate_cmd(padapter, datarates) != _SUCCESS)
-		ret = -ENOMEM;
-	return ret;
+	return r8712_setdatarate_cmd(padapter, datarates);
 }
 
 static int r8711_wx_get_rate(struct net_device *dev,