ARM/PCI: Fix pcibios_init_resource() struct pci_host_bridge leak

Since commit 97ad2bdc ("ARM/PCI: Convert PCI scan API to
pci_scan_root_bus_bridge()") the space for struct pci_sys_data is allocated
by pci_alloc_host_bridge() as part of the struct pci_host_bridge.

Therefore, failure paths must deallocate the entire pci_host_bridge by
using pci_free_host_bridge().

Fixes: 97ad2bdc ("ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge()")
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Andrew Lunn <andrew@lunn.ch>

arch/arm/kernel/bios32.c

@@ -480,7 +480,7 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw,
 
 			ret = pcibios_init_resource(nr, sys, hw->io_optional);
 			if (ret)  {
-				kfree(sys);
+				pci_free_host_bridge(bridge);
 				break;
 			}