KVM: x86/pmu: Don't retry a counter whose config was rejected

kvm_pmu_handle_event() re-arms the reprogram bit for every failed
reprogram, on the assumption that the failure is transient and a later
refresh will succeed.  That is true for contention, e.g. the -EBUSY from
x86_reserve_hardware(), but not for a configuration the host PMU driver
rejects outright.  A rejected config can never succeed on retry, so the
counter is reprogrammed on every PMU refresh for as long as the guest
leaves it enabled, and every attempt fails the same way.

Re-arm only for the errnos that indicate a transient condition, i.e.
-EBUSY and -ENOMEM.

Suggested-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/all/20260916123315.89042-1-absandze@amazon.de/
Signed-off-by: Luka Absandze <absandze@amazon.de>
Reviewed-by: Sandipan Das <sandipan.das@amd.com>
Link: https://patch.msgid.link/20260920155453.10836-1-absandze@amazon.de
Signed-off-by: Sean Christopherson <seanjc@google.com>

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