linuxtv_tuner: fix `stream_init()` failure case in `start_feed()`
linuxtv_tuner: fix `stream_init()` failure case in `start_feed()`

Signed-off-by: Michael Ira Krufky <00524723a60798c74a43fcc620c25dd7b9ece078@gmail.com>

mkrufky/libdvbtee,mkrufky/libdvbtee,mkrufky/libdvbtee,mkrufky/libdvbtee,mkrufky/libdvbtee