crypto: hisilicon/hpre - use the correct variable type

The return value of 'le32_to_cpu' is unsigned, so change the
variable type from 'int' to 'unsigned int'.
Signed-off-by: Hui Tang <tanghui20@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/hisilicon/hpre/hpre_crypto.c

@@ -322,7 +322,8 @@ static int hpre_alg_res_post_hf(struct hpre_ctx *ctx, struct hpre_sqe *sqe,
 				void **kreq)
 {
 	struct hpre_asym_request *req;
-	int err, id, done;
+	unsigned int err, done;
+	int id;
 
 #define HPRE_NO_HW_ERR		0
 #define HPRE_HW_TASK_DONE	3