spi: mpc512x-psc: Fix compile errors

My patch created compilation bugs in the MPC512x-PSC driver.
Fix them up.

Cc: Uwe Kleine-König <[e-mail]>
Cc: Anatolij Gustschin <[e-mail]>
Cc: [e-mail]
Reported-by: kernel test robot <[e-mail]>
Fixes: 2818824ced4b (" spi: mpc512x-psc: Convert to use GPIO descriptors")
Signed-off-by: Linus Walleij <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-mpc512x-psc.c

···
 	out_be32(psc_addr(mps, ccr), ccr);
 	mps->bits_per_word = cs->bits_per_word;
 
-	if (cs->gpiod) {
+	if (spi->cs_gpiod) {
 		if (mps->cs_control)
 			/* boardfile override */
 			mps->cs_control(spi, (spi->mode & SPI_CS_HIGH) ? 1 : 0);
···
 static int mpc512x_psc_spi_setup(struct spi_device *spi)
 {
 	struct mpc512x_psc_spi_cs *cs = spi->controller_state;
-	int ret;
 
 	if (spi->bits_per_word % 8)
 		return -EINVAL;