drm/nouveau/kms/nv50-: fix i2c-over-aux on anx9805

We don't support address-only transactions there.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/dispnv50/disp.c

@@ -3836,7 +3836,6 @@ nv50_pior_func = {
 static int
 nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe)
 {
-	struct nouveau_connector *nv_connector = nouveau_connector(connector);
 	struct nouveau_drm *drm = nouveau_drm(connector->dev);
 	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 	struct nvkm_i2c_bus *bus = NULL;
@@ -3854,7 +3853,7 @@ nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe)
 		break;
 	case DCB_OUTPUT_DP:
 		aux  = nvkm_i2c_aux_find(i2c, NVKM_I2C_AUX_EXT(dcbe->extdev));
-		ddc  = aux ? &nv_connector->aux.ddc : NULL;
+		ddc  = aux ? &aux->i2c : NULL;
 		type = DRM_MODE_ENCODER_TMDS;
 		break;
 	default: