msm: wfd: Fix for freeing recon buffers in enc subdev
msm: wfd: Fix for freeing recon buffers in enc subdev

Due to improper ION handle check, unmap is not happening.
Added proper ion handle check, to unmap buffers.

Change-Id: If5b32c8a640d08bf426d12bd5a87f5823059b514
Signed-off-by: Srinu Gorle <0ff7a2b3294c379f9aa5e055207871b7edad1f8c@codeaurora.org>
CRs-Fixed: 401244

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas