[PATCH] staging: lustre: fix ifnullfree.cocci warnings

[kbuild test robot]

From: Fengguang Wu <fengguang...@intel.com>

drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:886:2-7: WARNING: NULL 
check before freeing functions like kfree, debugfs_remove, 
debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider 
reorganizing relevant code to avoid passing NULL values.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Fixes: 862af72835c1 ("staging: lustre: replace simple cases of LIBCFS_ALLOC 
with kzalloc.")
CC: NeilBrown <ne...@suse.com>
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---

 o2iblnd.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -882,8 +882,7 @@ void kiblnd_destroy_conn(struct kib_conn
                            IBLND_RX_MSGS(conn) * sizeof(struct kib_rx));
        }
 
-       if (conn->ibc_connvars)
-               kfree(conn->ibc_connvars);
+       kfree(conn->ibc_connvars);
 
        if (conn->ibc_hdev)
                kiblnd_hdev_decref(conn->ibc_hdev);