Re: [PATCH v3 2/4] rv/reactors: propagate rv_register_reactor() error from reactor init

wen.yang@linux.dev writes:

From: Wen Yang <redacted>

Both register_react_printk() and register_react_panic() ignore the
return value of rv_register_reactor() and always return 0.  If the
registration fails (e.g. a duplicate reactor name), the init functions
silently report success even though the reactor was not registered.

Propagate the error from rv_register_reactor() so a failed registration
is reported instead of being silently ignored.

Suggested-by: Gabriele Monaco <gmonaco@redhat.com>
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Wen Yang <redacted>

Reviewed-by: Nam Cao <redacted>