UnboundLocalError in SDXLInpaint.prepare_latents() (#5648)

* fix: UnboundLocalError with image_latents

* chore: run make style, quality, fix-copies

* revert changes from make fix-copies

* revert changes from make fix-copies

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Co-authored-by: YiYi Xu <yixu310@gmail.com>

src/diffusers/pipelines/stable_diffusion_xl/pipeline_stable_diffusion_xl_inpaint.py

@@ -741,10 +741,11 @@ class StableDiffusionXLInpaintPipeline(
 
         if image.shape[1] == 4:
             image_latents = image.to(device=device, dtype=dtype)
+            image_latents = image_latents.repeat(batch_size // image_latents.shape[0], 1, 1, 1)
         elif return_image_latents or (latents is None and not is_strength_max):
             image = image.to(device=device, dtype=dtype)
             image_latents = self._encode_vae_image(image=image, generator=generator)
-        image_latents = image_latents.repeat(batch_size // image_latents.shape[0], 1, 1, 1)
+            image_latents = image_latents.repeat(batch_size // image_latents.shape[0], 1, 1, 1)
 
         if latents is None and add_noise:
             noise = randn_tensor(shape, generator=generator, device=device, dtype=dtype)