drm/amdgpu: Fix the runtime resume failure issue

Don't set power state flag when system enter runtime suspend,
or it may cause runtime resume failure issue.

Fixes: 3a9626c8 ("drm/amd: Stop evicting resources on APUs in suspend")
Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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

@@ -1528,6 +1528,9 @@ bool amdgpu_acpi_is_s0ix_active(struct amdgpu_device *adev)
  */
 void amdgpu_choose_low_power_state(struct amdgpu_device *adev)
 {
+	if (adev->in_runpm)
+		return;
+
 	if (amdgpu_acpi_is_s0ix_active(adev))
 		adev->in_s0ix = true;
 	else if (amdgpu_acpi_is_s3_active(adev))