[PATCH] PCI: fix memory leak in MMCONFIG error path

This a bit late (yours patch was posted about a year ago), but
a co-worker of spotted part of the code that looks like a memory
leak. Looking at the code it seems that pci_mmcfg_config should
be free-ed if MMCONFIG is above 4GB.

From: Konrad Rzeszutek <konradr@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

arch/i386/kernel/acpi/boot.c

@@ -202,6 +202,8 @@ int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
 		if (mcfg->config[i].base_reserved) {
 			printk(KERN_ERR PREFIX
 			       "MMCONFIG not in low 4GB of memory\n");
+			kfree(pci_mmcfg_config);
+			pci_mmcfg_config_num = 0;
 			return -ENODEV;
 		}
 	}