powerpc/eeh: Cleanup unused field in eeh_dev

The 'bus' member of struct eeh_dev is assigned to once but never used,
so remove it.
Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/eeh.h

@@ -147,7 +147,6 @@ struct eeh_dev {
 	struct pci_dev *pdev;		/* Associated PCI device	*/
 	bool in_error;			/* Error flag for edev		*/
 	struct pci_dev *physfn;		/* Associated SRIOV PF		*/
-	struct pci_bus *bus;		/* PCI bus for partial hotplug	*/
 };
 
 static inline struct pci_dn *eeh_dev_to_pdn(struct eeh_dev *edev)

arch/powerpc/kernel/eeh_driver.c

@@ -543,7 +543,6 @@ static void *eeh_rmv_device(struct eeh_dev *edev, void *userdata)
 	/* Remove it from PCI subsystem */
 	pr_debug("EEH: Removing %s without EEH sensitive driver\n",
 		 pci_name(dev));
-	edev->bus = dev->bus;
 	edev->mode |= EEH_DEV_DISCONNECTED;
 	if (removed)
 		(*removed)++;