cxl/pci: Add the PMUs after configuring events

cxl_pci_probe() adds the CPMU instances before configuring the event
interrupts. Both take an MSI/MSI-X vector the device names in its own
capability registers, and the spec lets a device point several capabilities
at one message number, so the two can collide.

They do not fail the same way. A failed devm_cxl_pmu_add() only breaks out
of the loop, while a failed cxl_event_config() aborts probe and the memory
device never appears. Going PMUs-first therefore lets a peripheral facility
take the vector and deny it to one that matters.

Configure events first, so a collision costs the PMU rather than the
memdev. Return 0 explicitly afterwards, since rc still holds any PMU error
that cxl_event_config() used to overwrite on the way past.

Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Signed-off-by: Will Deacon <will@kernel.org>

0 files changed, 0 insertions, 0 deletions