drm/amdgpu: skip unload tmr when tmr is not loaded

[why]
Skip TMR unload for Navi12 and CHIP_SIENNA_CICHLID SRIOV as TMR is
not loaded at all
Signed-off-by: Tong Liu01 <Tong.Liu01@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -839,7 +839,15 @@ static void psp_prep_tmr_unload_cmd_buf(struct psp_context *psp,
 static int psp_tmr_unload(struct psp_context *psp)
 {
 	int ret;
-	struct psp_gfx_cmd_resp *cmd = acquire_psp_cmd_buf(psp);
+	struct psp_gfx_cmd_resp *cmd;
+
+	/* skip TMR unload for Navi12 and CHIP_SIENNA_CICHLID SRIOV,
+	 * as TMR is not loaded at all
+	 */
+	if (amdgpu_sriov_vf(psp->adev) && psp_skip_tmr(psp))
+		return 0;
+
+	cmd = acquire_psp_cmd_buf(psp);
 
 	psp_prep_tmr_unload_cmd_buf(psp, cmd);
 	dev_dbg(psp->adev->dev, "free PSP TMR buffer\n");