RDMA/uverbs: Fix typo of sizeof argument

stable inclusion
from stable-v5.10.198
commit 5a4a6a47e0740653e416d5dda370c8aed2d7a3d4
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I987V5

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5a4a6a47e0740653e416d5dda370c8aed2d7a3d4



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

commit c489800e upstream.

Since size of 'hdr' pointer and '*hdr' structure is equal on 64-bit
machines issue probably didn't cause any wrong behavior. But anyway,
fixing of typo is required.

Fixes: da0f60df ("RDMA/uverbs: Prohibit write() calls with too small buffers")
Co-developed-by: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
Signed-off-by: Ivanov Mikhail <ivanov.mikhail1@huawei-partners.com>
Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com>
Link: https://lore.kernel.org/r/20230905103258.1738246-1-konstantin.meskhidze@huawei.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>