spi: spi-qpic-snand: unregister ECC engine on probe error and device remove

spi: spi-qpic-snand: unregister ECC engine on probe error and device remove

The on-host hardware ECC engine remains registered both when
the spi_register_controller() function returns with an error
and also on device removal.

Change the qcom_spi_probe() function to unregister the engine
on the error path, and add the missing unregistering call to
qcom_spi_remove() to avoid possible use-after-free issues.

Fixes: 7304d1909080 ("spi: spi-qpic: add driver for QCOM SPI NAND flash Interface")
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Message-ID: <20250903-qpic-snand-unregister-ecceng-v1-1-ef5387b0abdc@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>