uwb: fix error handling

Fatal errors such as a device disconnect must not trigger
error handling. The error returns must be checked.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed