GPU initialization update

Undo 212009a48a as it caused some issues with some pools and configs.

sgminer.c

@@ -4072,6 +4072,8 @@ void switch_pools(struct pool *selected)
       applog(LOG_WARNING, "Switching to %s", get_pool_name(pool));
       if (pool_localgen(pool) || opt_fail_only)
         clear_pool_work(last_pool);
+    }
+  }
   
   //if startup, initialize gpus and start mining threads
   if(startup)
@@ -4083,8 +4085,6 @@ void switch_pools(struct pool *selected)
     apply_initial_gpu_settings(pool);
     gpu_initialized = true; //gpus initialized
   }
-    }
-  }
 
   mutex_lock(&lp_lock);
   pthread_cond_broadcast(&lp_cond);