net/rds: start rdma listening after ib/iw initialization is done

This prevents RDS from handling incoming rdma packets before RDS
completes initializing its recv/send components.
We don't need to call rds_rdma_listen_stop() if rds_rdma_listen_init()
didn't succeed.
We only need to call rds_ib_exit() if rds_ib_init() succeeds but
other parts fail. The same applies to rds_iw_init()/rds_iw_exit().
So we need to change error handling sequence accordingly.
Jump to ib/iw error handling path when we get an err code from
rds_rdma_listen_init().

Orabug: 21684447

Signed-off-by: Qing Huang <[email protected]>
Signed-off-by: Mukesh Kacker <[email protected]>

Reviewed-by: Ajaykumar Hotchandani <[email protected]>

Acked-by: Santosh Shilimkar <[email protected]>

Orabug: 27364391

(cherry picked from commit 6d02e51)
cherry-pick-repo=linux-uek.git

Conflicts:
	net/rds/rdma_transport.c

Signed-off-by: Gerd Rausch <[email protected]>
Signed-off-by: Somasundaram Krishnasamy <[email protected]>

Orabug: 33590097

UEK6 => UEK7

(cherry picked from commit cc2ca09)
cherry-pick-repo=UEK/production/linux-uek.git

Signed-off-by: Gerd Rausch <[email protected]>
Reviewed-by: William Kucharski <[email protected]>

Author: GoKu-Gear6

net/rds/rdma_transport.c

@@ -443,13 +443,13 @@ int rds_rdma_init(void)
 {
 	int ret;
 
-	ret = rds_rdma_listen_init();
+	ret = rds_ib_init();
 	if (ret)
 		goto out;
 
-	ret = rds_ib_init();
+	ret = rds_rdma_listen_init();
 	if (ret)
-		goto err_ib_init;
+		goto err_rdma_listen_init;
 
 	if (!unload_allowed) {
 		printk(KERN_NOTICE "Module %s locked in memory until next boot\n",
@@ -459,9 +459,13 @@ int rds_rdma_init(void)
 
 	goto out;
 
-err_ib_init:
-	rds_rdma_listen_stop();
+err_rdma_listen_init:
+	/* We need to clean up both ib and iw components. */
+	rds_ib_exit();
 out:
+	/* Either nothing is done successfully or everything succeeds at
+	 * this point.
+	 */
 	return ret;
 }
 module_init(rds_rdma_init);