drm/msm/a6xx: Check kzalloc return in a8xx_hfi_send_perf_table

[ Upstream commit b5c7a7f ]

Check the return value of kzalloc() to prevent a NULL pointer
dereference on allocation failure.

Fixes: 06cfbca ("drm/msm/a6xx: Share dependency vote table with GMU")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Akhil P Oommen <akhilpo@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/721342/
Message-ID: <20260428073558.1234238-1-nichen@iscas.ac.cn>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: Chen Ni

drivers/gpu/drm/msm/adreno/a6xx_hfi.c

@@ -289,6 +289,8 @@ static int a8xx_hfi_send_perf_table(struct a6xx_gmu *gmu)
 		(gmu->nr_gpu_freqs * num_gx_votes * sizeof(gmu->gx_arc_votes[0])) +
 		(gmu->nr_gmu_freqs * num_cx_votes * sizeof(gmu->cx_arc_votes[0]));
 	tbl = kzalloc(size, GFP_KERNEL);
+	if (!tbl)
+		return -ENOMEM;
 	tbl->type = HFI_TABLE_GPU_PERF;
 
 	/* First fill GX votes */