input: sensors: fix error handler for BOSCH bma2x2

Fix error exit handler for BOSCH bma2x2 accelerometer driver.
When probe does not success, driver can release resources
correctly.

CRs-fixed: 653165
Change-Id: If2add335f42bbf0c510e8f9028aa8f85caba804a
Signed-off-by: Oliver Wang <mengmeng@codeaurora.org>
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>