Handle connection failures on the control channel properly

This patch fixes a bug where a failed control channel connection would
fail to exit early. Status was updated and broadcasted to be connected
even when we were not.

Tag: #stability
Bug: 175275589
Test: atest BluetoothInstrumentationTests
Change-Id: Ic089d6317c4c9c7b8830dd1f1c0ff27cb1d008f2