ASoC: msm: qdsp6v2: Fix uninitialized variable error

Variable is used without initializing, initialize it to proper value.

CRs-Fixed: 2273335
Change-Id: I8c37babe5f56c68acbce60c11c3d595333f22868
Signed-off-by: Dhanalakshmi Siddani <dsiddani@codeaurora.org>