vp9_cx_iface: Remove else when returning from the other branch.
vp9_cx_iface: Remove else when returning from the other branch.

Change-Id: I2fc15ec25cc5587cafc6621176d0a6d7c376fc7c

ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx