spi: mpc512x: use devm_spi_register_master()

Use devm_spi_register_master() to make cleanup paths simpler,
and remove a duplicate put.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-mpc512x-psc.c

@@ -534,7 +534,7 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
 	if (ret < 0)
 		goto free_clock;
 
-	ret = spi_register_master(master);
+	ret = devm_spi_register_master(dev, master);
 	if (ret < 0)
 		goto free_clock;
 
@@ -557,12 +557,10 @@ static int mpc512x_psc_spi_do_remove(struct device *dev)
 	struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
 	struct mpc512x_psc_spi *mps = spi_master_get_devdata(master);
 
-	spi_unregister_master(master);
 	clk_disable_unprepare(mps->clk_mclk);
 	free_irq(mps->irq, mps);
 	if (mps->psc)
 		iounmap(mps->psc);
-	spi_master_put(master);
 
 	return 0;
 }