unable to build on rocky9 (or centos 7)

[IAmTheRealGoof]

mostly new build in VM

`[test@localhost rtl8812AU_8821AU_linux]$ make

make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/5.14.0-284.18.1.el9_2.x86_64/build M=/home/test/Downloads/drivers/rtl8812AU_8821AU_linux modules

make[1]: Entering directory '/usr/src/kernels/5.14.0-284.18.1.el9_2.x86_64'

CC [M] /home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.o

In file included from /home/test/Downloads/drivers/rtl8812AU_8821AU_linux/include/osdep_service.h:41,
from /home/test/Downloads/drivers/rtl8812AU_8821AU_linux/include/drv_types.h:32,
from /home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.c:22:
/home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.c: In function ‘rtw_cmd_thread’:
/home/test/Downloads/drivers/rtl8812AU_8821AU_linux/include/osdep_service_linux.h:166:23: error: implicit declaration of function ‘complete_and_exit’ [-Werror=implicit-function-declaration]
166 | #define thread_exit() complete_and_exit(NULL, 0)
| ^~~~~~~~~~~~~~~~~
/home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.c:706:9: note: in expansion of macro ‘thread_exit’
706 | thread_exit();
| ^~~~~~~~~~~
/home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.c:708:1: error: control reaches end of non-void function [-Werror=return-type]
708 | }
| ^
cc1: all warnings being treated as errors
make[2]: *** [scripts/Makefile.build:321: /home/test/Downloads/drivers/rtl8812AU_8821AU_linux/core/rtw_cmd.o] Error 1
make[1]: *** [Makefile:1923: /home/test/Downloads/drivers/rtl8812AU_8821AU_linux] Error 2
make[1]: Leaving directory '/usr/src/kernels/5.14.0-284.18.1.el9_2.x86_64'

make: *** [Makefile:1622: modules] Error 2`