From: Iuliana Prodan <iuliana.prodan@nxp.com>
Date: Wed, 31 Jul 2019 13:08:12 +0000 (+0300)
Subject: crypto: caam - free resources in case caam_rng registration failed
X-Git-Tag: v4.19.99~140
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e21a1c26c1bc1b0913541c02b6443cd08f75aaa0;p=platform%2Fkernel%2Flinux-rpi.git

crypto: caam - free resources in case caam_rng registration failed

[ Upstream commit c59a1d41672a89b5cac49db1a472ff889e35a2d2 ]

Check the return value of the hardware registration for caam_rng and free
resources in case of failure.

Fixes: e24f7c9e87d4 ("crypto: caam - hwrng support")
Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Horia Geanta <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/crypto/caam/caamrng.c b/drivers/crypto/caam/caamrng.c
index fde07d4..ff6718a 100644
--- a/drivers/crypto/caam/caamrng.c
+++ b/drivers/crypto/caam/caamrng.c
@@ -353,7 +353,10 @@ static int __init caam_rng_init(void)
 		goto free_rng_ctx;
 
 	dev_info(dev, "registering rng-caam\n");
-	return hwrng_register(&caam_rng);
+
+	err = hwrng_register(&caam_rng);
+	if (!err)
+		return err;
 
 free_rng_ctx:
 	kfree(rng_ctx);