esp.c: move existing request cancel check into esp_select()

esp.c: move existing request cancel check into esp_select()

Since get_cmd() can be called multiple times during a mixed FIFO/DMA request,
move the existing request cancel check into esp_select() which always occurs
at the start of new SCSI request.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Tested-by: Helge Deller <deller@gmx.de>
Tested-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240112125420.514425-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>