media: staging: atomisp: Don't leak GPIO resources if clk_get() failed

In case devm_clk_get() call fails the previously requested GPIOs are
left requested.

Fix this by moving GPIO request code after devm_clk_get() call.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>