platform/x86/intel/pmc: Fix in mtl_punit_pmt_init()

platform/x86/intel/pmc: Fix in mtl_punit_pmt_init()

pci_get_domain_bus_and_slot() increases the reference count on the pci
device that is used to register the endpoint. In case of failure in
registration, decrease reference count using pci_dev_put(pcidev) before
returning.

Fixes: 6e7964855381 ("platform/x86/intel/pmc: Show Die C6 counter on Meteor Lake")
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20231219042216.2592029-1-rajvi.jingar@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>