media: dvb: Fix memory leak in DMX_ADD_PID
media: dvb: Fix memory leak in DMX_ADD_PID

Adding a new PID to a recording filter while it is already running
might fail, in which case the dmxdev_feed object that was allocated is
not freed.

Change-Id: I7d322570fd3e17a82ab60a8d5f59077018094ce3
Signed-off-by: Gilad Broner <822e83f36b3b682c554ad5bd6c83a8c459cdae33@codeaurora.org>

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