scsi: ufs: core: Remove WARN_ON_ONCE() call from ufshcd_uic_cmd_compl()

The UIC completion interrupt may be disabled while an UIC command is
being processed. When the UIC completion interrupt is reenabled, an UIC
interrupt is triggered and the WARN_ON_ONCE(!cmd) statement is hit.
Hence this patch that removes this kernel warning.

Fixes: fcd8b0450a9a ("scsi: ufs: core: Make ufshcd_uic_cmd_compl() easier to analyze")
Reviewed-by: Peter Wang <[e-mail]>
Signed-off-by: Bart Van Assche <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/ufs/core/ufshcd.c

···
 
 	guard(spinlock_irqsave)(hba->host->host_lock);
 	cmd = hba->active_uic_cmd;
-	if (WARN_ON_ONCE(!cmd))
+	if (!cmd)
 		goto unlock;
 
 	if (ufshcd_is_auto_hibern8_error(hba, intr_status))