mm/kasan/init.c: remove unnecessary pointer variables

Simplify the code to enhance readability and maintain a consistent
coding style.

Link: https://lkml.kernel.org/r/20250811034257.154862-1-zhao.xichao@vivo.com
Signed-off-by: Xichao Zhao <zhao.xichao@vivo.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index 8fce3370c84ea64cec3fc6c0e8f3d385f78fedb0..f084e7a5df1e5fcb9394649322f78a28ba79c613 100644 (file)
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -266,11 +266,9 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
                }
 
                if (pgd_none(*pgd)) {
-                       p4d_t *p;
 
                        if (slab_is_available()) {
-                               p = p4d_alloc(&init_mm, pgd, addr);
-                               if (!p)
+                               if (!p4d_alloc(&init_mm, pgd, addr))
                                        return -ENOMEM;
                        } else {
                                pgd_populate_kernel(addr, pgd,