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block/rnbd: Fix an IS_ERR() vs NULL check in find_or_create_sess()

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The alloc_sess() function returns error pointers, it never returns NULL.

Fixes: f7a7a5c228 ("block/rnbd: client: main functionality")
Link: https://lore.kernel.org/r/20200519120347.GD42765@mwanda
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Dan Carpenter 2020-05-19 15:03:47 +03:00 committed by Jason Gunthorpe
parent 6d1e7ba241
commit 47393fb57b
1 changed files with 4 additions and 5 deletions
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9
drivers/block/rnbd/rnbd-clt.c
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@ -923,13 +923,12 @@ rnbd_clt_session *find_or_create_sess(const char *sessname, bool *first)
sess = __find_and_get_sess(sessname);
if (!sess) {
sess = alloc_sess(sessname);
if (sess) {
list_add(&sess->list, &sess_list);
*first = true;
} else {
if (IS_ERR(sess)) {
mutex_unlock(&sess_lock);
return ERR_PTR(-ENOMEM);
return sess;
}
list_add(&sess->list, &sess_list);
*first = true;
} else
*first = false;
mutex_unlock(&sess_lock);