lavapipe: report allocation-error

If we fail to create an image, we need to report this, otherwise we'll
start doing crazy stuff, like reporting a required size of zero.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10689>

src/gallium/frontends/lavapipe/lvp_image.c

@@ -92,6 +92,8 @@ lvp_image_create(VkDevice _device,
       image->bo = device->pscreen->resource_create_unbacked(device->pscreen,
                                                             &template,
                                                             &image->size);
+      if (!image->bo)
+         return vk_error(device->instance, VK_ERROR_OUT_OF_HOST_MEMORY);
    }
    *pImage = lvp_image_to_handle(image);