amd/amdgpu: use kmalloc_array to replace kmalloc with multiply

Fix check_patch.pl warning:
WARNING: Prefer kmalloc_array over kmalloc with multiply
+bps = kmalloc(align_space * sizeof((*data)->bps), GFP_KERNEL);
WARNING: Prefer kmalloc_array over kmalloc with multiply
+bps_bo = kmalloc(align_space * sizeof((*data)->bps_bo),
GFP_KERNEL);
kmalloc_array has multiply overflow check, which will be safer.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

@@ -280,8 +280,8 @@ static int amdgpu_virt_init_ras_err_handler_data(struct amdgpu_device *adev)
 	if (!*data)
 		return -ENOMEM;
 
-	bps = kmalloc(align_space * sizeof((*data)->bps), GFP_KERNEL);
-	bps_bo = kmalloc(align_space * sizeof((*data)->bps_bo), GFP_KERNEL);
+	bps = kmalloc_array(align_space, sizeof((*data)->bps), GFP_KERNEL);
+	bps_bo = kmalloc_array(align_space, sizeof((*data)->bps_bo), GFP_KERNEL);
 
 	if (!bps || !bps_bo) {
 		kfree(bps);