drivers/perf: hisi_pcie: Initialize event->cpu only on success

Initialize the event->cpu only on success. To be more reasonable
and keep consistent with other PMUs.
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20231024092954.42297-3-yangyicong@huawei.comSigned-off-by: Will Deacon <will@kernel.org>

drivers/perf/hisilicon/hisi_pcie_pmu.c

@@ -357,8 +357,6 @@ static int hisi_pcie_pmu_event_init(struct perf_event *event)
 	if (event->attr.type != event->pmu->type)
 		return -ENOENT;
 
-	event->cpu = pcie_pmu->on_cpu;
-
 	if (EXT_COUNTER_IS_USED(hisi_pcie_get_event(event)))
 		hwc->event_base = HISI_PCIE_EXT_CNT;
 	else
@@ -374,6 +372,8 @@ static int hisi_pcie_pmu_event_init(struct perf_event *event)
 	if (!hisi_pcie_pmu_validate_event_group(event))
 		return -EINVAL;
 
+	event->cpu = pcie_pmu->on_cpu;
+
 	return 0;
 }