crypto: x86/sm3 - Fixup SLS

This missed the big asm update due to being merged through the crypto
tree.

Fixes: f94909ce ("x86: Prepare asm files for straight-line-speculation")
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

arch/x86/crypto/sm3-avx-asm_64.S

@@ -513,5 +513,5 @@ SYM_FUNC_START(sm3_transform_avx)
 
 	movq %rbp, %rsp;
 	popq %rbp;
-	ret;
+	RET;
 SYM_FUNC_END(sm3_transform_avx)