cxgb4: Fix return value check in cfg_queues_uld()

Fix the retrn value check which testing the wrong variable
in cfg_queues_uld().

Fixes: 94cdb8bb ("cxgb4: Add support for dynamic allocation of
resources for ULD")
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c

@@ -308,7 +308,7 @@ int cfg_queues_uld(struct adapter *adap, unsigned int uld_type,
 	}
 
 	rxq_info->rspq_id = kcalloc(nrxq, sizeof(unsigned short), GFP_KERNEL);
-	if (!rxq_info->uldrxq) {
+	if (!rxq_info->rspq_id) {
 		kfree(rxq_info->uldrxq);
 		kfree(rxq_info);
 		return -ENOMEM;