iio: adc: xilinx: Check for return values in clk related functions

This patch adds check for return values from clock related functions.
This was reported by static code analysis tool.

Signed-off-by: Manish Narani <manish.narani@xilinx.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Manish Narani 2018-07-23 20:32:00 +05:30 • committed by Jonathan Cameron
commit 0a8460966f