Check the return value of kmalloc() in function frontend_init(), 
in file drivers/media/dvb/bt8xx/dvb-bt8xx.c.
Signed-off-by: NAmit Choudhary <amit2030@gmail.com>
Signed-off-by: NManu Abraham <manu@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>