crypto: omap-aes - fix error return code in omap_aes_probe()

Fix to return error code -ENOMEM from the crypto_engine_alloc_init()
error handling case instead of 0, as done elsewhere in this function.

Fixes: 0529900a01cb ("crypto: omap-aes - Support crypto engine framework")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/omap-aes.c

diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index 2033769e..fe32dd9 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -1215,8 +1215,10 @@
 
 	/* Initialize crypto engine */
 	dd->engine = crypto_engine_alloc_init(dev, 1);
-	if (!dd->engine)
+	if (!dd->engine) {
+		err = -ENOMEM;
 		goto err_engine;
+	}
 
 	dd->engine->prepare_cipher_request = omap_aes_prepare_req;
 	dd->engine->cipher_one_request = omap_aes_crypt_req;