Bluetooth: hci_sync: Fix not using correct handle

Bluetooth: hci_sync: Fix not using correct handle

BugLink: https://bugs.launchpad.net/bugs/2074091
[ Upstream commit 86fbd9f63a6b42b8f158361334f5a25762aea358 ]

When setting up an advertisement the code shall always attempt to use
the handle set by the instance since it may not be equal to the instance
ID.

Fixes: e77f43d531af ("Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Portia Stephens <portia.stephens@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>