kasan: drop CONFIG_KASAN_GENERIC check from kasan_init_cache_meta

As kasan_init_cache_meta() is only defined for the Generic mode, it does
not require the CONFIG_KASAN_GENERIC check.

Link: https://lkml.kernel.org/r/211f8f2b213aa91e9148ca63342990b491c4917a.1662411799.git.andreyknvl@google.comSigned-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/kasan/generic.c

@@ -367,12 +367,6 @@ void kasan_init_cache_meta(struct kmem_cache *cache, unsigned int *size)
 		/* Continue, since free meta might still fit. */
 	}
 
-	/* Only the generic mode uses free meta or flexible redzones. */
-	if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) {
-		cache->kasan_info.free_meta_offset = KASAN_NO_FREE_META;
-		return;
-	}
-
 	/*
 	 * Add free meta into redzone when it's not possible to store
 	 * it in the object. This is the case when: