LU-17000 coverity: Fix 'Extra argument' under lst.c

LU-17000 coverity: Fix 'Extra argument' under lst.c

This patch fixes 'Extra argument to printf' error reported
by coverity run.

CID: 397265 ("Extra argument to printf"): lst.c

Test-Parameters: trivial testlist=sanity-lnet
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: Iae039e9c6a27a71a852e7d44baab840eac17795e
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/52660
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>