PCI/portdrv: Add put_device() after device_register() failure

This is required so that we give up the last reference to the device.
Removed the kfree() as put_device will result in release_pcie_device()
being called and hence the container of the device will be kfree'd.

[bhelgaas: fix conflict after my previous cleanup]
Signed-off-by: NLevente Kurusa <levex@linux.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

drivers/pci/pcie/portdrv_core.c

@@ -345,7 +345,7 @@ static int pcie_device_init(struct pci_dev *pdev, int service, int irq)
 
 	retval = device_register(device);
 	if (retval) {
-		kfree(pcie);
+		put_device(device);
 		return retval;
 	}