Fix referencing sense data when it is invalid. When the length of the data
segment is 0, there is no valid information in the rsp field, so
ufshpb_rsp_upiu() is returned without additional operation.

Link: https://lore.kernel.org/r/252651381.41652940482659.JavaMail.epsvc@epcpadp4
Fixes: 4b5f4907 ("scsi: ufs: ufshpb: L2P map management for HPB read")
Acked-by: NAvri Altman <avri.altman@wdc.com>
Signed-off-by: NDaejun Park <daejun7.park@samsung.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>