scsi: ufs: Fix interrupt error message for shared interrupts

[ Upstream commit 6337f58c ]

The interrupt might be shared, in which case it is not an error for the
interrupt handler to be called when the interrupt status is zero, so don't
print the message unless there was enabled interrupt status.

Link: https://lore.kernel.org/r/20200811133936.19171-1-adrian.hunter@intel.com


Fixes: 9333d775 ("scsi: ufs: Fix irq return code")
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>