amdgpu: check parameters in amdgpu_query_gpu_info

Make sure they aren't NULL.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=97993

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

amdgpu/amdgpu_gpu_info.c

@@ -230,6 +230,8 @@ drm_private int amdgpu_query_gpu_info_init(amdgpu_device_handle dev)
 int amdgpu_query_gpu_info(amdgpu_device_handle dev,
 			struct amdgpu_gpu_info *info)
 {
+	if ((dev == NULL) || (info == NULL))
+		return -EINVAL;
 	/* Get ASIC info*/
 	*info = dev->info;