USB-IP: Deletion of unnecessary checks before the function call "usb_put_dev"

The usb_put_dev() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/usbip/vhci_hcd.c

@@ -518,7 +518,6 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 			dev_info(dev, "SetAddress Request (%d) to port %d\n",
 				 ctrlreq->wValue, vdev->rhport);
 
-			if (vdev->udev)
 			usb_put_dev(vdev->udev);
 			vdev->udev = usb_get_dev(urb->dev);
 
@@ -539,7 +538,6 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 				usbip_dbg_vhci_hc(
 					"Not yet?:Get_Descriptor to device 0 (get max pipe size)\n");
 
-			if (vdev->udev)
 			usb_put_dev(vdev->udev);
 			vdev->udev = usb_get_dev(urb->dev);
 			goto out;
@@ -831,7 +829,6 @@ static void vhci_device_reset(struct usbip_device *ud)
 	vdev->speed  = 0;
 	vdev->devid  = 0;
 
-	if (vdev->udev)
 	usb_put_dev(vdev->udev);
 	vdev->udev = NULL;