drm/i915: call drm_encoder_init first

Later initialisation of the encoder often requires that
drm_encoder_init() has already been called, for instance, initialiasing
the DDC buses.

Yet another recent regression, as 819f3fb7 depended upon these fixes
which I missed when cherry-picking.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/intel_crt.c

@@ -548,6 +548,10 @@ void intel_crt_init(struct drm_device *dev)
 	if (!intel_encoder->ddc_bus) {
 		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
 			   "failed.\n");
+		drm_connector_cleanup(&intel_connector->base);
+		kfree(intel_connector);
+		drm_encoder_cleanup(&intel_encoder->base);
+		kfree(intel_encoder);
 		return;
 	}