drm/msm/a6xx: Check kzalloc return in a8xx_hfi_send_perf_table

drm/msm/a6xx: Check kzalloc return in a8xx_hfi_send_perf_table

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

Fixes: 06cfbca0e1c6 ("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>