msm: camera: fix i2c eeprom probe failed

There is a null pointer issue in msm_eeprom_i2c_probe.
Fix the null pointer issue referring to msm_eeprom_platform_probe.

Change-Id: I8a6f16ba5d143606026a220e5f6981cb18162778
Signed-off-by: Zhaohong Chen <zhaohong@codeaurora.org>