The CloseProtocol() boot service requires a handle as first argument.
Passing the protocol interface is incorrect.
CloseProtocol() only has an effect if called with a non-zero value for
agent_handle. HandleProtocol() uses an opaque agent_handle when invoking
OpenProtocol() (currently NULL). Therefore HandleProtocol() should be
avoided.
* Replace the LocateHandle() call by efi_search_protocol().
* Remove the CloseProtocol() call.
Fixes: 8d99026f0697 ("efi_loader: capsule: support firmware update") Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>