lib/kstrtox.c: remove redundant cleanup

We can't reach the cleanup code unless the flag KSTRTOX_OVERFLOW is not
set, so there's not no point in clearing a bit that we know is not set.

Signed-off-by: Felipe Contreras <[e-mail]>
Acked-by: Levente Kurusa <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

lib/kstrtox.c

···
 	rv = _parse_integer(s, base, &_res);
 	if (rv & KSTRTOX_OVERFLOW)
 		return -ERANGE;
-	rv &= ~KSTRTOX_OVERFLOW;
 	if (rv == 0)
 		return -EINVAL;
 	s += rv;