devlink: use min_t to calculate data_size

The calculation for the data_size in the devlink_nl_read_snapshot_fill
function uses an if statement that is better expressed using the min_t
macro.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/core/devlink.c

@@ -6485,10 +6485,8 @@ static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb,
 		u32 data_size;
 		u8 *data;
 
-		if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE)
-			data_size = end_offset - curr_offset;
-		else
-			data_size = DEVLINK_REGION_READ_CHUNK_SIZE;
+		data_size = min_t(u32, end_offset - curr_offset,
+				  DEVLINK_REGION_READ_CHUNK_SIZE);
 
 		data = &snapshot->data[curr_offset];
 		err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink,