perf: arm_spe: Remove unnecessary zero check on 'nr_pages'

We already check that the 'nr_pages' is > 2, so there's no need to check
that it's != 0 later on.

Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Signed-off-by: Will Deacon <will@kernel.org>

drivers/perf/arm_spe_pmu.c

@@ -831,7 +831,7 @@ static void *arm_spe_pmu_setup_aux(struct perf_event *event, void **pages,
 	 * parts and give userspace a fighting chance of getting some
 	 * useful data out of it.
 	 */
-	if (!nr_pages || (snapshot && (nr_pages & 1)))
+	if (snapshot && (nr_pages & 1))
 		return NULL;
 
 	if (cpu == -1)