glsl: move some linking calls to gl_nir_link_glsl()

This is a more logical place for them and will avoid us adding more
function validtion calls to the st glsl to nir file in future
patches.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28538>

src/compiler/glsl/gl_nir_linker.c

@@ -1677,6 +1677,18 @@ gl_nir_link_glsl(const struct gl_constants *consts,
 
    MESA_TRACE_FUNC();
 
+   for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+      if (prog->_LinkedShaders[i] == NULL)
+         continue;
+
+      gl_nir_detect_recursion_linked(prog,
+                                     prog->_LinkedShaders[i]->Program->nir);
+      if (!prog->data->LinkStatus)
+         return false;
+
+      gl_nir_inline_functions(prog->_LinkedShaders[i]->Program->nir);
+   }
+
    resize_tes_inputs(consts, prog);
 
    /* Validate the inputs of each stage with the output of the preceding

src/mesa/state_tracker/st_glsl_to_nir.cpp

@@ -542,12 +542,6 @@ st_link_glsl_to_nir(struct gl_context *ctx,
          }
 
          prog->nir = glsl_to_nir(&st->ctx->Const, shader_program, shader->Stage, options);
-
-         gl_nir_detect_recursion_linked(shader_program, prog->nir);
-         if (!shader_program->data->LinkStatus)
-            return GL_FALSE;
-
-         gl_nir_inline_functions(prog->nir);
       }
 
       memcpy(prog->nir->info.source_sha1, shader->linked_source_sha1,