spi: octeon: Use transfer speed unconditionally

SPI core validates the transfer speed and defaults to spi->max_speed_hz in
case the transfer speed is not set.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/spi/spi-octeon.c b/drivers/spi/spi-octeon.c
index e99d6a9..07e4ce8 100644
--- a/drivers/spi/spi-octeon.c
+++ b/drivers/spi/spi-octeon.c
@@ -65,7 +65,7 @@
 	cpha = mode & SPI_CPHA;
 	cpol = mode & SPI_CPOL;
 
-	speed_hz = xfer->speed_hz ? : spi->max_speed_hz;
+	speed_hz = xfer->speed_hz;
 
 	clkdiv = octeon_get_io_clock_rate() / (2 * speed_hz);