msm: vidc: Free pixel plane handle when map extradata fails

Map extradata or buf_ref_get can fail resulting in memleak.
Free pixel plane handle in those cases. Also if map fails
in map_and_update binfo, derefernce on the null handle still
happens. Hence return immediate if map fails.

Change-Id: Ib02adbccc62208cb6342ad8825e8663c385f7b14
Signed-off-by: Abdulla Anam <abdullahanam@codeaurora.org>