crypto: keembay-ocs-ecc - Fix error return code in kmb_ocs_ecc_probe()

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

Fixes: c9f608c3 ("crypto: keembay-ocs-ecc - Add Keem Bay OCS ECC Driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/keembay/keembay-ocs-ecc.c

@@ -930,6 +930,7 @@ static int kmb_ocs_ecc_probe(struct platform_device *pdev)
 	ecc_dev->engine = crypto_engine_alloc_init(dev, 1);
 	if (!ecc_dev->engine) {
 		dev_err(dev, "Could not allocate crypto engine\n");
+		rc = -ENOMEM;
 		goto list_del;
 	}