x86/alternative: Simplify int3_selftest_ip

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2090231



commit 99c95c5d
Author: Peter Zijlstra <peterz@infradead.org>
Date:   Tue, 8 Mar 2022 16:30:37 +0100

    x86/alternative: Simplify int3_selftest_ip

    Similar to ibt_selftest_ip, apply the same pattern.

Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
    Link: https://lore.kernel.org/r/20220308154318.700456643@infradead.org



Signed-off-by: Waiman Long <longman@redhat.com>