IMA: Add __init notation to ima functions

A number of IMA functions only used during init are not marked with __init.
Add those notations so they are freed automatically.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/integrity/ima/ima_iint.c b/security/integrity/ima/ima_iint.c
index ec79f1e..b8dd693 100644
--- a/security/integrity/ima/ima_iint.c
+++ b/security/integrity/ima/ima_iint.c
@@ -196,7 +196,7 @@
 	kref_set(&iint->refcount, 1);
 }
 
-void ima_iintcache_init(void)
+void __init ima_iintcache_init(void)
 {
 	iint_cache =
 	    kmem_cache_create("iint_cache", sizeof(struct ima_iint_cache), 0,