There may be a case where i2s_data may not get initialized by the for
loop which will cause the kernel crash. Initialize the i2s_data to NULL
and abort execute if it isn't found.
Fixes: 402bbb13a195 ("ASoC: mediatek: mt8365: Add I2S DAI support")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>