xfrm: Auto-load xfrm offload modules

IPSec crypto offload depends on the protocol-specific
offload module (such as esp_offload.ko).

When the user installs an SA with crypto-offload, load
the offload module automatically, in the same way
that the protocol module is loaded (such as esp.ko)

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 1b539b7..ffe8d5e 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -584,7 +584,7 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
 
 	xfrm_mark_get(attrs, &x->mark);
 
-	err = __xfrm_init_state(x, false);
+	err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
 	if (err)
 		goto error;