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

Convert the function rtw_writeN() away from returning _FAIL or
_SUCCESS which uses inverted error logic. Use the common error logic
instead. Return 0 for success and negative values for failure.
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/20230108123804.3754-1-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_fw.c

@@ -89,9 +89,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
 		addr = FW_8188E_START_ADDRESS + i * block_size;
 		data = buffer + i * block_size;
 
-		ret = rtw_writeN(padapter, addr, block_size, data);
-		if (ret == _FAIL)
-			goto exit;
+		if (rtw_writeN(padapter, addr, block_size, data))
+			return _FAIL;
 	}
 
 	if (remain) {
@@ -105,9 +104,8 @@ static int block_write(struct adapter *padapter, u8 *buffer, u32 size)
 			addr = FW_8188E_START_ADDRESS + offset + i * block_size;
 			data = buffer + offset + i * block_size;
 
-			ret = rtw_writeN(padapter, addr, block_size, data);
-			if (ret == _FAIL)
-				goto exit;
+			if (rtw_writeN(padapter, addr, block_size, data))
+				return _FAIL;
 		}
 	}
 

drivers/staging/r8188eu/hal/usb_ops_linux.c

@@ -179,14 +179,11 @@ int rtw_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *data)
 	struct io_priv *io_priv = &adapter->iopriv;
 	struct intf_hdl *intf = &io_priv->intf;
 	u16 value = addr & 0xffff;
-	int ret;
 
 	if (length > VENDOR_CMD_MAX_DATA_LEN)
-		return _FAIL;
+		return -EINVAL;
 
-	ret = usb_write(intf, value, data, length);
-
-	return RTW_STATUS_CODE(ret);
+	return usb_write(intf, value, data, length);
 }
 
 static void handle_txrpt_ccx_88e(struct adapter *adapter, u8 *buf)