UPSTREAM: HID: sony: remove redundant check for -ve err

err is being checked for failure each time it is being updated
so this err check is totally redundant and can be removed

Detected with CoverityScan, CID#1420665 ("Logically dead code")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
(cherry picked from commit 040fc001765d374776353cb4f8b03ea7fa41e3cd)

Bug: 111431828
Signed-off-by: Kim Low <kim-huei.low@sony.com>
Change-Id: Ic89da1691639ab912284f3742f2d2bdf9211f35f