staging: comedi: das08: No need to manipulate PCI ref count

Now that this driver no longer supports "manual" attachment of PCI
devices in its `attach` hook (`das08_attach()`), it no longer has code
that searches for a suitable PCI device and increments its reference
count.  Since the driver no longer has any reason for incrementing and
decrementing the PCI device's reference count, the calls to
`pci_dev_get()` and `pci_dev_put()` can be removed.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/das08.c

@@ -793,13 +793,6 @@ das08_attach_pci(struct comedi_device *dev, struct pci_dev *pdev)
 		dev_err(dev->class_dev, "BUG! cannot determine board type!\n");
 		return -EINVAL;
 	}
-	/*
-	 * Need to 'get' the PCI device to match the 'put' in das08_detach().
-	 * TODO: Remove the pci_dev_get() and matching pci_dev_put() once
-	 * support for manual attachment of PCI devices via das08_attach()
-	 * has been removed.
-	 */
-	pci_dev_get(pdev);
 	devpriv = dev->private;
 	devpriv->pdev = pdev;
 	/*  enable PCI device and reserve I/O spaces */
@@ -864,7 +857,6 @@ static void __maybe_unused das08_detach(struct comedi_device *dev)
 		if (devpriv && devpriv->pdev) {
 			if (dev->iobase)
 				comedi_pci_disable(devpriv->pdev);
-			pci_dev_put(devpriv->pdev);
 		}
 	}
 }