kms: Only pause device after all surfaces are successfully suspended

src/backend/kms/mod.rs

@@ -420,13 +420,13 @@ impl State {
         let backend = self.backend.kms();
         backend.libinput.suspend();
         for device in backend.drm_devices.values_mut() {
-            device.drm.pause();
             if let Some(lease_state) = device.inner.leasing_global.as_mut() {
                 lease_state.suspend();
             }
             for surface in device.inner.surfaces.values_mut() {
                 surface.suspend();
             }
+            device.drm.pause();
         }
     }
 }