bus: mhi: host: Bail on writing register fields if read fails

Helper API to write register fields relies on successful reads
of the register/address prior to the write. Bail out if a failure
is seen when reading the register before the actual write is
performed.

Signed-off-by: Bhaumik Bhatt <[email protected]>
Signed-off-by: Jeffrey Hugo <[email protected]>
Reviewed-by: Hemant Kumar <[email protected]>
Reviewed-by: Jeffrey Hugo <[email protected]>
Reviewed-by: Manivannan Sadhasivam <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Manivannan Sadhasivam <[email protected]>

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