glsl: call assign_attribute_or_color_locations() in NIR linker

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22846>

src/compiler/glsl/gl_nir_linker.c

@@ -25,6 +25,7 @@
 #include "nir_builder.h"
 #include "gl_nir.h"
 #include "gl_nir_linker.h"
+#include "gl_nir_link_varyings.h"
 #include "linker_util.h"
 #include "main/shader_types.h"
 #include "main/consts_exts.h"
@@ -1246,6 +1247,9 @@ gl_nir_link_glsl(const struct gl_constants *consts,
          linked_shader[num_shaders++] = prog->_LinkedShaders[i];
    }
 
+   if (!gl_assign_attribute_or_color_locations(consts, prog))
+      return false;
+
    if (!prelink_lowering(consts, exts, prog, linked_shader, num_shaders))
       return false;