RDMA/rtrs-clt: Move free_permit from free_clt to rtrs_clt_close

stable inclusion
from stable-v5.10.103
commit 0ecd3e35d78ee083d9663c85669272a8eecd6c95
bugzilla: https://gitee.com/openeuler/kernel/issues/I56NE7

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=0ecd3e35d78ee083d9663c85669272a8eecd6c95

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

[ Upstream commit c46fa891 ]

Error path of rtrs_clt_open() calls free_clt(), where free_permit is
called.  This is wrong since error path of rtrs_clt_open() does not need
to call free_permit().

Also, moving free_permits() call to rtrs_clt_close(), makes it more
aligned with the call to alloc_permit() in rtrs_clt_open().

Fixes: 6a98d71d ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20220217030929.323849-2-haris.iqbal@ionos.comSigned-off-by: NMd Haris Iqbal <haris.iqbal@ionos.com>
Reviewed-by: NJack Wang <jinpu.wang@ionos.com>
Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NYu Liao <liaoyu15@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/infiniband/ulp/rtrs/rtrs-clt.c

@@ -2638,7 +2638,6 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num,
 
 static void free_clt(struct rtrs_clt *clt)
 {
-	free_permits(clt);
 	free_percpu(clt->pcpu_path);
 
 	/*
@@ -2759,6 +2758,7 @@ void rtrs_clt_close(struct rtrs_clt *clt)
 		rtrs_clt_destroy_sess_files(sess, NULL);
 		kobject_put(&sess->kobj);
 	}
+	free_permits(clt);
 	free_clt(clt);
 }
 EXPORT_SYMBOL(rtrs_clt_close);