selinux: don't transliterate MAY_NOT_BLOCK to IPERM_FLAG_RCU

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index d515b21..dca1c22 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -527,7 +527,7 @@
 	 * happened a little later.
 	 */
 	if ((a->type == LSM_AUDIT_DATA_INODE) &&
-	    (flags & IPERM_FLAG_RCU))
+	    (flags & MAY_NOT_BLOCK))
 		return -ECHILD;
 
 	a->selinux_audit_data.tclass = tclass;