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 (file)
--- 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);