perf/core: Fix narrow startup race when creating the perf nr_addr_filters sysfs file

[ Upstream commit 652ffc21 ]

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/2023061204-decal-flyable-6090@gregkh


Signed-off-by: Sasha Levin <sashal@kernel.org>