qaic: silence possible uninitialized warning

At the end of qaic_manage(), the kfree(rsp) generates a possible
uninitialized use warning.  While this won't actually happen per code
inspection, its pretty trivial to silence, so lets do that.

Change-Id: I478a1f2a200d1a87610cdb642e7679b8fdb7a8c7
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>