If (quirks & QUIRK_SEC_DAI == 0) then samsung_i2s_probe() doesn't allocate^^^^^^^^
sec_dai and pri_dai->sec_dai remains Null, but samsung_i2s_remove()
permorms pri_dai->sec_dai dereference in any case.
The patch adds sec_dai check on Null before derefence at
samsung_i2s_remove().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev<vasilyev@xxxxxxxxx>