vo_gpu: fix possible segfault on shader miscompile

Iterations after the first time will fail to realize that the pass was
never created. This function's logic and control flow is so annoying...

video/out/gpu/shader_cache.c

@@ -571,10 +571,6 @@ static bool create_pass(struct gl_shader_cache *sc, struct sc_entry *entry)
         MP_TARRAY_APPEND(sc, params.inputs, params.num_inputs, ubo_input);
     }
 
-    entry->pass = sc->ra->fns->renderpass_create(sc->ra, &params);
-    if (!entry->pass)
-        goto error;
-
     if (sc->ubo_size) {
         struct ra_buf_params ubo_params = {
             .type = RA_BUF_TYPE_UNIFORM,
@@ -589,6 +585,10 @@ static bool create_pass(struct gl_shader_cache *sc, struct sc_entry *entry)
         }
     }
 
+    entry->pass = sc->ra->fns->renderpass_create(sc->ra, &params);
+    if (!entry->pass)
+        goto error;
+
     if (entry->pass && cache_filename) {
         bstr nc = entry->pass->params.cached_program;
         if (nc.len && !bstr_equals(params.cached_program, nc)) {
@@ -869,7 +869,8 @@ static void gl_sc_generate(struct gl_shader_cache *sc,
             sc->error_state = true;
         MP_TARRAY_APPEND(sc, sc->entries, sc->num_entries, entry);
     }
-    if (sc->error_state) {
+
+    if (!entry->pass) {
         sc->current_shader = NULL;
         return;
     }