staging: rtl8712: Remove useless variable 'fw_found'

The net device only exists when firmware is loaded successfully.
Firmware presence variable is only used through r871xu_dev_remove() and
this function already checks for net device existence.
Signed-off-by: Thomas Vegas <thomas@grouk.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/drv_types.h

@@ -160,7 +160,6 @@ struct _adapter {
 	s32	bSurpriseRemoved;
 	u32	IsrContent;
 	u32	ImrContent;
-	bool	fw_found;
 	u8	EepromAddressSize;
 	u8	hw_init_completed;
 	struct task_struct *cmdThread;

drivers/staging/rtl8712/hal_init.c

@@ -50,13 +50,11 @@ static void rtl871x_load_fw_cb(const struct firmware *firmware, void *context)
 		struct usb_device *udev = padapter->dvobjpriv.pusbdev;
 		struct usb_interface *pusb_intf = padapter->pusb_intf;
 		dev_err(&udev->dev, "r8712u: Firmware request failed\n");
-		padapter->fw_found = false;
 		usb_put_dev(udev);
 		usb_set_intfdata(pusb_intf, NULL);
 		return;
 	}
 	padapter->fw = firmware;
-	padapter->fw_found = true;
 	/* firmware available - start netdev */
 	register_netdev(padapter->pnetdev);
 }

drivers/staging/rtl8712/os_intfs.c

@@ -345,7 +345,6 @@ u8 r8712_free_drv_sw(struct _adapter *padapter)
 	r8712_free_mlme_priv(&padapter->mlmepriv);
 	r8712_free_io_queue(padapter);
 	_free_xmit_priv(&padapter->xmitpriv);
-	if (padapter->fw_found)
 	_r8712_free_sta_priv(&padapter->stapriv);
 	_r8712_free_recv_priv(&padapter->recvpriv);
 	mp871xdeinit(padapter);

drivers/staging/rtl8712/usb_intf.c

@@ -613,7 +613,6 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf)
 		struct _adapter *padapter = netdev_priv(pnetdev);
 
 		usb_set_intfdata(pusb_intf, NULL);
-		if (padapter->fw_found)
 		release_firmware(padapter->fw);
 		/* never exit with a firmware callback pending */
 		wait_for_completion(&padapter->rtl8712_fw_ready);
@@ -623,7 +622,6 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf)
 		flush_scheduled_work();
 		udelay(1);
 		/* Stop driver mlme relation timer */
-		if (padapter->fw_found)
 		r8712_stop_drv_timers(padapter);
 		r871x_dev_unload(padapter);
 		r8712_free_drv_sw(padapter);