spi: cadence-quadspi: fix cleanup of rx_chan on failure paths

Remove incorrect checks on cqspi->rx_chan that cause driver breakage
during failure cleanup. Ensure proper resource freeing on the success
path when operating in cqspi->use_direct_mode, preventing leaks and
improving stability.

Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@altera.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/89765a2b94f047ded4f14babaefb7ef92ba07cb2.1751274389.git.khairul.anuar.romli@altera.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: kromli

drivers/spi/spi-cadence-quadspi.c

@@ -1960,11 +1960,6 @@ static int cqspi_probe(struct platform_device *pdev)
 
 	pm_runtime_enable(dev);
 
-	if (cqspi->rx_chan) {
-		dma_release_channel(cqspi->rx_chan);
-		goto probe_setup_failed;
-	}
-
 	pm_runtime_set_autosuspend_delay(dev, CQSPI_AUTOSUSPEND_TIMEOUT);
 	pm_runtime_use_autosuspend(dev);
 	pm_runtime_get_noresume(dev);