[PATCH v2] vhost/crypto: fix segfault

[Radu Nicolau <radu.nicolau@intel.com>]

Fix potential call with dev->mem uninitialized, one common usecase
example being running the autotest with more than one device.

Fixes: 3bb595ecd682 ("vhost/crypto: add request handler")
Cc: stable@dpdk.org

Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
---
v2: removed unncessary ()

 lib/vhost/vhost_crypto.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/vhost/vhost_crypto.c b/lib/vhost/vhost_crypto.c
index 648e2d731b..a19cdd61cc 100644
--- a/lib/vhost/vhost_crypto.c
+++ b/lib/vhost/vhost_crypto.c
@@ -1512,6 +1512,10 @@ vhost_crypto_process_one_req(struct vhost_crypto *vcrypto,
 		VC_LOG_ERR("Invalid descriptor");
 		return -1;
 	}
+	if (unlikely(vc_req->dev->mem == NULL)) {
+		VC_LOG_ERR("Uninitialized vhost device");
+		return -1;
+	}
 
 	dlen = head->len;
 	src_desc = IOVA_TO_VVA(struct vring_desc *, vc_req->dev, vq,
-- 
2.52.0