[PATCH 3.16 110/370] IPoIB: Avoid reading an uninitialized member variable

[Ben Hutchings]

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Bart Van Assche <bart.vanass...@sandisk.com>

commit 11b642b84e8c43e8597de031678d15c08dd057bc upstream.

This patch avoids that Coverity reports the following:

    Using uninitialized value port_attr.state when calling printk

Fixes: commit 94232d9ce817 ("IPoIB: Start multicast join process only on active 
ports")
Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Cc: Erez Shitrit <ere...@mellanox.com>
Reviewed-by: Leon Romanovsky <leo...@mellanox.com>
Signed-off-by: Doug Ledford <dledf...@redhat.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -523,8 +523,11 @@ void ipoib_mcast_join_task(struct work_s
        if (!test_bit(IPOIB_MCAST_RUN, &priv->flags))
                return;
 
-       if (ib_query_port(priv->ca, priv->port, &port_attr) ||
-           port_attr.state != IB_PORT_ACTIVE) {
+       if (ib_query_port(priv->ca, priv->port, &port_attr)) {
+               ipoib_dbg(priv, "ib_query_port() failed\n");
+               return;
+       }
+       if (port_attr.state != IB_PORT_ACTIVE) {
                ipoib_dbg(priv, "port state is not ACTIVE (state = %d) 
suspending join task\n",
                          port_attr.state);
                return;