soc: qcom: Fix error handling in PIL driver probe

PIL driver probe fails as it is unable to get smem-states. This is
due to smp2p probe was deferred as it has other dependencies. Fix
the error propagation so that PIL driver can be probed later.

Change-Id: Ie64958a9975049926b7823c72ad14b372e8258e5
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgutta@codeaurora.org>