net: mlxsw: linecards: fix missing error check in mlxsw_linecard_devlink_info_get()

net: mlxsw: linecards: fix missing error check in mlxsw_linecard_devlink_info_get()

[ Upstream commit b0c959fec18f4595a6a6317ffc30615cfa37bf69 ]

The call to devlink_info_version_fixed_put() in
mlxsw_linecard_devlink_info_get() did not check for errors,
although it is checked everywhere in the code.

Add missed 'err' check to the mlxsw_linecard_devlink_info_get()

Fixes: 3fc0c51905fb ("mlxsw: core_linecards: Expose device PSID over device info")
Signed-off-by: Pavel Zhigulin <Pavel.Zhigulin@kaspersky.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20251113161922.813828-1-Pavel.Zhigulin@kaspersky.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>