nfs: Add missing release on error in nfs_lock_and_join_requests()

nfs: Add missing release on error in nfs_lock_and_join_requests()

[ Upstream commit 8e5419d6542fdf2dca9a0acdef2b8255f0e4ba69 ]

Call nfs_release_request() on this error path before returning.

Fixes: c3f2235782c3 ("nfs: fold nfs_folio_find_and_lock_request into nfs_lock_and_join_requests")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/3aaaa3d5-1c8a-41e4-98c7-717801ddd171@stanley.mountain
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>