clk: boston: unregister clks on failure in clk_boston_setup()

	hw = clk_hw_register_fixed_rate(NULL, "input", NULL, 0, in_freq);

	if (IS_ERR(hw)) {

		pr_err("failed to register input clock: %ld\n", PTR_ERR(hw));

		goto error;

		goto fail_input;

	}

	onecell->hws[BOSTON_CLK_INPUT] = hw;

	hw = clk_hw_register_fixed_rate(NULL, "sys", "input", 0, sys_freq);

	if (IS_ERR(hw)) {

		pr_err("failed to register sys clock: %ld\n", PTR_ERR(hw));

		goto error;

		goto fail_sys;

	}

	onecell->hws[BOSTON_CLK_SYS] = hw;

	hw = clk_hw_register_fixed_rate(NULL, "cpu", "input", 0, cpu_freq);

	if (IS_ERR(hw)) {

		pr_err("failed to register cpu clock: %ld\n", PTR_ERR(hw));

		goto error;

		goto fail_cpu;

	}

	onecell->hws[BOSTON_CLK_CPU] = hw;

	err = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, onecell);

	if (err)

	if (err) {

		pr_err("failed to add DT provider: %d\n", err);

		goto fail_clk_add;

	}

	return;

error:

fail_clk_add:

	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_CPU]);

fail_cpu:

	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_SYS]);

fail_sys:

	clk_hw_unregister_fixed_rate(onecell->hws[BOSTON_CLK_INPUT]);

fail_input:

	kfree(onecell);

}