scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR

In the Linux kernel, the following vulnerability has been resolved:

scsi: ufs: core: Fix racing issue between ufshcd_mcq_abort() and ISR

If command timeout happens and cq complete IRQ is raised at the same time,

ufshcd_mcq_abort clears lprb->cmd and a NULL pointer deref happens in the

ISR. Error log:

ufshcd_abort: Device abort task at tag 18

Unable to handle kernel NULL pointer dereference at virtual address

0000000000000108

pc : [0xffffffe27ef867ac] scsi_dma_unmap+0xc/0x44

lr : [0xffffffe27f1b898c] ufshcd_release_scsi_cmd+0x24/0x114