fix sdxl-turbo running without quantization

Author: eaidova

notebooks/sdxl-turbo/sdxl-turbo.ipynb

@@ -450,6 +450,10 @@
     "\n",
     "core = ov.Core()\n",
     "\n",
+    "model_dir_int8 =  Path(\"./model_int8\")\n",
+    "UNET_INT8_OV_PATH = model_dir_int8 / \"unet\" / \"openvino_model.xml\"\n",
+    "UNET_OV_PATH = model_dir / \"unet\" / \"openvino_model.xml\"\n",
+    "\n",
     "%load_ext skip_kernel_extension"
    ]
   },
@@ -474,11 +478,6 @@
     "import os\n",
     "import shutil\n",
     "\n",
-    "\n",
-    "model_dir_int8 =  Path(\"./model_int8\")\n",
-    "UNET_INT8_OV_PATH = model_dir_int8 / \"unet\" / \"openvino_model.xml\"\n",
-    "\n",
-    "\n",
     "if not model_dir_int8.exists():\n",
     "    shutil.copytree(model_dir, model_dir_int8)\n",
     "    os.remove(UNET_INT8_OV_PATH)  # remove to replace by optimised"
@@ -767,7 +766,6 @@
     "import nncf\n",
     "from nncf.scopes import IgnoredScope\n",
     "\n",
-    "UNET_OV_PATH = model_dir / \"unet\" / \"openvino_model.xml\"\n",
     "if not UNET_INT8_OV_PATH.exists():\n",
     "    unet = core.read_model(UNET_OV_PATH)\n",
     "    quantized_unet = nncf.quantize(\n",