Input: imx6ul_tsc - clean up some errors in imx6ul_tsc_resume()

If imx6ul_tsc_init() fails then we need to clean up the clocks.

I reversed the "if (input_dev->users) {" condition to make the code a
bit simpler.

Fixes: 6cc527b0 ("Input: imx6ul_tsc - propagate the errors")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200905124942.GC183976@mwanda


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>