msm: camera: core: Remove the null check before sending flush

Allow the device driver to follow the proper cleanup sequence
during stop to avoid smmu fault in next device start.

Change-Id: I1ac3fec03f9141a36f9a303e26f35585c78fc8a3
Signed-off-by: vhajeri <vhajeri@codeaurora.org>
1 file changed