nir/lower_shader_calls: update metadata before validation

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19820>

src/compiler/nir/nir_lower_shader_calls.c

@@ -1234,11 +1234,11 @@ lower_resume(nir_shader *shader, int call_idx)
 
    ralloc_free(mem_ctx);
 
+   nir_metadata_preserve(impl, nir_metadata_none);
+
    nir_validate_shader(shader, "after flatten_resume_if_ladder in "
                                "nir_lower_shader_calls");
 
-   nir_metadata_preserve(impl, nir_metadata_none);
-
    return resume_instr;
 }