ASoC: soc-utils: Remove __exit for snd_soc_util_exit()

snd_soc_util_exit() is called in __init snd_soc_init() for cleanup.
Remove the __exit annotation for it to fix the build warning:

WARNING: modpost: sound/soc/snd-soc-core.o: section mismatch in reference: init_module (section: .init.text) -> snd_soc_util_exit (section: .exit.text)

Fixes: 6ec27c53886c ("ASoC: core: Fix use-after-free in snd_soc_exit()")
Signed-off-by: Chen Zhongjin <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/soc-utils.c

···
 	return ret;
 }
 
-void __exit snd_soc_util_exit(void)
+void snd_soc_util_exit(void)
 {
 	platform_driver_unregister(&soc_dummy_driver);
 	platform_device_unregister(soc_dummy_dev);