serial: icom: fix code format problems

Fix below inconsistent indenting smatch warning.
smatch warnings:
drivers/tty/serial/icom.c:1768 icom_probe() warn: inconsistent indenting

Removed that useless (void *), the code would fit on a single 100c line
Removed  '{' and '}'.

Signed-off-by: Charles Han <hanchunchao@inspur.com>
Link: https://lore.kernel.org/r/20250305095120.7518-1-hanchunchao@inspur.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>