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655faba1cc
If an error occurs at the stage of working with registers in conjunction
with MCU_Block, it will not be processed.
The occurrence of errors at this stage may signal an impact on writes to
the device's PCI registers and is a more global problem than a
driver-level security problem, but adding a handler would be a good
practice.
Add a missing error handling.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: c0e5f4e73a ("misc: rtsx: Add support for RTS5261")
Signed-off-by: Gleb Markov <markov.gi@npc-ksb.ru>
Link: https://patch.msgid.link/20260629130920.1260-1-markov.gi@npc-ksb.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>