ufshcd_add_cmd_upiu_trace() will be called later anyway. Simplify code by
moving if-statement.

Link: https://lore.kernel.org/r/20210802180803.100033-1-huobean@gmail.comReviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>