ecore_drm2: Follow direct crtc sets with a page flip

Now that the bugs generating extra ticks are fixed, we need to make sure
we can actually generate one here.

src/lib/ecore_drm2/ecore_drm2_fb.c

@@ -412,8 +412,11 @@ ecore_drm2_fb_flip(Ecore_Drm2_Fb *fb, Ecore_Drm2_Output *output)
              output->current = fb;
              output->current->busy = EINA_TRUE;
              output->next = NULL;
-
-             return 0;
+             /* We used to return here, but now that the ticker is fixed this
+              * can leave us hanging waiting for a tick to happen forever.
+              * Instead, we now fall through the the flip path to make sure
+              * even this first set can cause a flip callback.
+              */
           }
 
         ret =