[MIPS] Make frame_info_init() more readable.

	mfinfo[0].func = schedule;

	schedule_frame = &mfinfo[0];

#endif

	for (i = 0; i < ARRAY_SIZE(mfinfo) && mfinfo[i].func; i++) {

		struct mips_frame_info *info = &mfinfo[i];

		if (get_frame_info(info)) {

			/* leaf or unknown */

			if (info->func == schedule)

				printk("Can't analyze prologue code at %p\n",

				       info->func);

		}

	}

	for (i = 0; i < ARRAY_SIZE(mfinfo) && mfinfo[i].func; i++)

		get_frame_info(mfinfo + i);

	/*

	 * Without schedule() frame info, result given by

	 * thread_saved_pc() and get_wchan() are not reliable.

	 */

	if (schedule_frame->pc_offset < 0)

		printk("Can't analyze schedule() prologue at %p\n", schedule);

	mfinfo_num = i;

	return 0;