Fix incorrect type assignment error reported by sparse as:

drivers/firmware/arm_scmi/voltage.c:159:42: warning: incorrect type in assignment (different base types)
drivers/firmware/arm_scmi/voltage.c:159:42: expected restricted __le32 [usertype] level_index
drivers/firmware/arm_scmi/voltage.c:159:42: got unsigned int [usertype] desc_index

Reported-by: kernel test robot <redacted>
Fixes: 2add5cacff353 ("firmware: arm_scmi: Add voltage domain management protocol support")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
 drivers/firmware/arm_scmi/voltage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_scmi/voltage.c b/drivers/firmware/arm_scmi/voltage.c
index a5048956a0be..ac08e819088b 100644
--- a/drivers/firmware/arm_scmi/voltage.c
+++ b/drivers/firmware/arm_scmi/voltage.c

@@ -156,7 +156,7 @@ static int scmi_voltage_descriptors_get(const struct scmi_protocol_handle *ph,
 			int cnt;
 
 			cmd->domain_id = cpu_to_le32(v->id);
-			cmd->level_index = desc_index;
+			cmd->level_index = cpu_to_le32(desc_index);
 			ret = ph->xops->do_xfer(ph, tl);
 			if (ret)
 				break;

-- 
2.17.1


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