spi: xcomm: make use of devm_spi_alloc_host()

Use devm_spi_alloc_host() so that there's no need to call
spi_controller_put() in the error path.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240705-dev-spi-xcomm-gpiochip-v2-2-b10842fc9636@analog.com


Signed-off-by: Mark Brown <broonie@kernel.org>