spi: armada-3700: Remove unnecessary condition

We checked that "a3700_spi->wait_mask & cause" was set at the beginning
of the function so we don't need to check again here.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NRomain Perier <romain.perier@free-electrons.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-armada-3700.c

@@ -340,8 +340,7 @@ static irqreturn_t a3700_spi_interrupt(int irq, void *dev_id)
 	spireg_write(a3700_spi, A3700_SPI_INT_STAT_REG, cause);
 
 	/* Wake up the transfer */
-	if (a3700_spi->wait_mask & cause)
-		complete(&a3700_spi->done);
+	complete(&a3700_spi->done);
 
 	return IRQ_HANDLED;
 }