CVE-2022-49011

A counting logic flaw exists in the Linux kernel. When ci_get_domain_bus_and_slot() is called, it returns a pci device with refcount incremented. When finishing it,
the caller must decrement the reference count by calling pci_dev_put(), leading to the loss of confidentiality of the system.

In the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) fix pci device refcount leak in nv1a_ram_new() 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.