cxgb3: fix device opening error path

Only negative return from bind_qsets() should be considered an error and
propagated.
It fixes an issue reported by IBM on P Series platform.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Tested-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/cxgb3/cxgb3_main.c

@@ -1266,11 +1266,13 @@ static int cxgb_up(struct adapter *adap)
 	}
 
 	if (!(adap->flags & QUEUES_BOUND)) {
-		err = bind_qsets(adap);
-		if (err) {
-			CH_ERR(adap, "failed to bind qsets, err %d\n", err);
+		int ret = bind_qsets(adap);
+
+		if (ret < 0) {
+			CH_ERR(adap, "failed to bind qsets, err %d\n", ret);
 			t3_intr_disable(adap);
 			free_irq_resources(adap);
+			err = ret;
 			goto out;
 		}
 		adap->flags |= QUEUES_BOUND;