ataflop: Add missing semicolon to return statement

ataflop: Add missing semicolon to return statement

    drivers/block/ataflop.c: In function ‘ataflop_probe’:
    drivers/block/ataflop.c:2023:2: error: expected expression before ‘if’
     2023 |  if (ataflop_alloc_disk(drive, type))
	  |  ^~
    drivers/block/ataflop.c:2023:2: error: ‘return’ with a value, in function returning void [-Werror=return-type]
    drivers/block/ataflop.c:2011:13: note: declared here
     2011 | static void ataflop_probe(dev_t dev)
	  |             ^~~~~~~~~~~~~

Fixes: f74f07e8cffa3301 ("ataflop: address add_disk() error handling on probe")
Reported-by: noreply@ellerman.id.au
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20211106185549.1578444-1-geert@linux-m68k.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>