Fix order of endif comments

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/library/aes.c b/library/aes.c
index a64b2a5..c506709 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -324,10 +324,10 @@
 static const uint32_t RT3[256] = { RT };
 #undef V
 
-#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
-
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
 
+#endif /* !defined(MBEDTLS_AES_DECRYPT_ALT) || !defined(MBEDTLS_AES_SETKEY_DEC_ALT) */
+
 #undef RT
 
 #if !defined(MBEDTLS_AES_SETKEY_ENC_ALT)