net/smc: fix SMCD link group creation with VLAN id

If creation of an SMCD link group with VLAN id fails, the initial
smc_ism_get_vlan() step has to be reverted as well.

Fixes: c6ba7c9ba43d ("net/smc: add base infrastructure for SMC-D and ISM")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>

diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 4ca50dd..88556f0 100644 (file)
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -213,7 +213,7 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
        lgr = kzalloc(sizeof(*lgr), GFP_KERNEL);
        if (!lgr) {
                rc = SMC_CLC_DECL_MEM;
-               goto out;
+               goto ism_put_vlan;
        }
        lgr->is_smcd = ini->is_smcd;
        lgr->sync_err = 0;
@@ -289,6 +289,9 @@ clear_llc_lnk:
        smc_llc_link_clear(lnk);
 free_lgr:
        kfree(lgr);
+ism_put_vlan:
+       if (ini->is_smcd && ini->vlan_id)
+               smc_ism_put_vlan(ini->ism_dev, ini->vlan_id);
 out:
        if (rc < 0) {
                if (rc == -ENOMEM)