net: rfkill: gpio: Add check for clk_enable()

Add check for the return value of clk_enable() to catch the potential
error.

Fixes: 7176ba23 ("net: rfkill: add generic gpio rfkill driver")
Signed-off-by: Mingwei Zheng <zmw12306@gmail.com>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Link: https://patch.msgid.link/20241108195341.1853080-1-zmw12306@gmail.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>