keucr: Fixes return is not a function error in smilmain.c

Fixes the following checkpatch error,
ERROR: return is not a function, parentheses are not required
Signed-off-by: NAmarjargal Gundjalam <amarjargal16@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>