drivers/sensor: check xyz_mem_bank_set() ret value

Check xyz_mem_bank_set() API return value to catch and report as soon
as possible the error condition. Impacted stmemsc API:

  - lsm6dso_mem_bank_set()
  - lsm6dso16is_mem_bank_set()
  - lsm6dsv16x_mem_bank_set()

Fix:

  Coverity-CID: 316212 (issue #58579)
  Coverity-CID: 316224 (issue #58580)
  Coverity-CID: 316307 (issue #58586)

Signed-off-by: Armando Visconti <armando.visconti@st.com>