scsi: ufshcd: Fix double release of hba

Fix double release of hba when handling sg mapping.

Change-Id: I6402642410b8c05661e765a35260e5d2714ceec8
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>