ASoC: codecs: Fix error check in es8323_i2c_probe

In the function es8323_i2c_probe(), devm_kzalloc() could
possibly return NULL pointer, so IS_ERR() is wrong check
in this place, thus fix it.

Fixes: b97391a6 ("ASoC: codecs: Add support for ES8323")
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Link: https://patch.msgid.link/20241011073115.2384-1-tangbin@cmss.chinamobile.com


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