spi: uniphier: fix wrong register overwrite

When it changes the spi mode, the register is overwritten incorrectly.
This commit fixes this register overwrite.
Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Link: https://lore.kernel.org/r/1567488661-11428-2-git-send-email-hayashibara.keiji@socionext.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-uniphier.c

@@ -214,6 +214,7 @@ static void uniphier_spi_setup_transfer(struct spi_device *spi,
 	if (!priv->is_save_param || priv->mode != spi->mode) {
 		uniphier_spi_set_mode(spi);
 		priv->mode = spi->mode;
+		priv->is_save_param = false;
 	}
 
 	if (!priv->is_save_param || priv->bits_per_word != t->bits_per_word) {