bna: PCI Probe Conf Lock Fix

If register_netdev() fails now, then we call mutex_unlock(&bnad->conf_mutex);
on the error path, but it's already unlocked. So we acquire the lock in error
path which will be later unlocked after the cleanup.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c
index abca1399fe51..db6c0978899b 100644
--- a/drivers/net/ethernet/brocade/bna/bnad.c
+++ b/drivers/net/ethernet/brocade/bna/bnad.c
@@ -3359,6 +3359,7 @@ probe_success:
         return 0;
 
 probe_uninit:
+        mutex_lock(&bnad->conf_mutex);
         bnad_res_free(bnad, &bnad->mod_res_info[0], BNA_MOD_RES_T_MAX);
 disable_ioceth:
         bnad_ioceth_disable(bnad);