hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new()

jira VULN-33707
jira VULN-33706
cve CVE-2022-49011
commit-author Yang Yingliang <[email protected]>
commit 7dec145

As comment of pci_get_domain_bus_and_slot() says, it returns
a pci device with refcount increment, when finish using it,
the caller must decrement the reference count by calling
pci_dev_put(). So call it after using to avoid refcount leak.

Fixes: 14513ee ("hwmon: (coretemp) Use PCI host bridge ID to identify CPU if necessary")
	Signed-off-by: Yang Yingliang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
	Signed-off-by: Guenter Roeck <[email protected]>
(cherry picked from commit 7dec145)
	Signed-off-by: Jonathan Maple <[email protected]>

Author: PlaidCat

drivers/hwmon/coretemp.c

@@ -256,10 +256,13 @@ static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
 	 */
 	if (host_bridge && host_bridge->vendor == PCI_VENDOR_ID_INTEL) {
 		for (i = 0; i < ARRAY_SIZE(tjmax_pci_table); i++) {
-			if (host_bridge->device == tjmax_pci_table[i].device)
+			if (host_bridge->device == tjmax_pci_table[i].device) {
+				pci_dev_put(host_bridge);
 				return tjmax_pci_table[i].tjmax;
+			}
 		}
 	}
+	pci_dev_put(host_bridge);
 
 	for (i = 0; i < ARRAY_SIZE(tjmax_table); i++) {
 		if (strstr(c->x86_model_id, tjmax_table[i].id))