caif: checking the wrong variable

In the original code we check if (servl == NULL) twice.  The first time
should print the message that cfmuxl_remove_uplayer() failed and set
"ret" correctly, but instead it just returns success.  The second check
should be checking the value of "ret" instead of "servl".

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/caif/cfcnfg.c b/net/caif/cfcnfg.c
index 21ede14..c665de7 100644 (file)
--- a/net/caif/cfcnfg.c
+++ b/net/caif/cfcnfg.c
@@ -191,6 +191,7 @@ int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg, struct cflayer *adap_layer)
        struct cflayer *servl = NULL;
        struct cfcnfg_phyinfo *phyinfo = NULL;
        u8 phyid = 0;
+
        caif_assert(adap_layer != NULL);
        channel_id = adap_layer->id;
        if (adap_layer->dn == NULL || channel_id == 0) {
@@ -199,16 +200,16 @@ int cfcnfg_disconn_adapt_layer(struct cfcnfg *cnfg, struct cflayer *adap_layer)
                goto end;
        }
        servl = cfmuxl_remove_uplayer(cnfg->mux, channel_id);
-       if (servl == NULL)
-               goto end;
-       layer_set_up(servl, NULL);
-       ret = cfctrl_linkdown_req(cnfg->ctrl, channel_id, adap_layer);
        if (servl == NULL) {
                pr_err("PROTOCOL ERROR - Error removing service_layer Channel_Id(%d)",
                       channel_id);
                ret = -EINVAL;
                goto end;
        }
+       layer_set_up(servl, NULL);
+       ret = cfctrl_linkdown_req(cnfg->ctrl, channel_id, adap_layer);
+       if (ret)
+               goto end;
        caif_assert(channel_id == servl->id);
        if (adap_layer->dn != NULL) {
                phyid = cfsrvl_getphyid(adap_layer->dn);