spi: dw: Remove needless if statements

SPI core validates both bits_per_word and speed_hz transfer parameters and
defaults to spi->bits_per_word and spi->max_speed_hz in case these per
transfer parameters are not set. This allows to remove related if
statements as they evaluate always to true and reduce indentation.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-dw.c

@@ -309,9 +309,7 @@ static int dw_spi_transfer_one(struct spi_master *master,
 	cr0 = chip->cr0;
 
 	/* Handle per transfer options for bpw and speed */
-	if (transfer->speed_hz) {
 	speed = chip->speed_hz;
-
 	if ((transfer->speed_hz != speed) || !chip->clk_div) {
 		speed = transfer->speed_hz;
 
@@ -323,8 +321,6 @@ static int dw_spi_transfer_one(struct spi_master *master,
 
 		spi_set_clk(dws, chip->clk_div);
 	}
-	}
-	if (transfer->bits_per_word) {
 	if (transfer->bits_per_word == 8) {
 		dws->n_bytes = 1;
 		dws->dma_width = 1;
@@ -336,7 +332,6 @@ static int dw_spi_transfer_one(struct spi_master *master,
 		| (chip->type << SPI_FRF_OFFSET)
 		| (spi->mode << SPI_MODE_OFFSET)
 		| (chip->tmode << SPI_TMOD_OFFSET);
-	}
 
 	/*
 	 * Adjust transfer mode if necessary. Requires platform dependent