Bluetooth: btintel_pcie: Fix irq leak

Free irq before releasing irq vector.

Fixes: c2b636b3 ("Bluetooth: btintel_pcie: Add support for PCIe transport")
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>