media: camif-core: Add check for clk_enable()

[ Upstream commit 77ed2470ac09c2b0a33cf3f98cc51d18ba9ed976 ]

Add check for the return value of clk_enable() to gurantee the success.

Fixes: babde1c2 ("[media] V4L: Add driver for S3C24XX/S3C64XX SoC series camera interface")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>