fixup! kasan_set_tag_vmalloc() multiple definitions

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>

include/linux/kasan.h

@@ -238,8 +238,10 @@ static inline int kasan_populate_vmalloc(unsigned long start,
 {
 	return 0;
 }
-void *kasan_set_tag_vmalloc(void *addr)
-{ }
+static inline void *kasan_set_tag_vmalloc(void *addr)
+{
+	return addr;
+}
 static inline void kasan_poison_vmalloc(const void *start, unsigned long size)
 { }
 static inline void kasan_unpoison_vmalloc(const void *start, unsigned long size)