ALSA: rme32: Remove superfluous snd_dma_continuous_data()

The recent change (commit 08422d2c559d: "ALSA: memalloc: Allow NULL
device for SNDRV_DMA_TYPE_CONTINUOUS type") made the PCM preallocation
helper accepting NULL as the device pointer for the default usage.
Drop the snd_dma_continuous_data() usage that became superfluous from
the callers.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/rme32.c

···
 		snd_pcm_set_ops(rme32->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE,
 				&snd_rme32_capture_spdif_fd_ops);
 		snd_pcm_lib_preallocate_pages_for_all(rme32->spdif_pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-						      snd_dma_continuous_data(GFP_KERNEL),
+						      NULL,
 						      0, RME32_MID_BUFFER_SIZE);
 		rme32->spdif_pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 	} else {
···
 			snd_pcm_set_ops(rme32->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, 
 					&snd_rme32_capture_adat_fd_ops);
 			snd_pcm_lib_preallocate_pages_for_all(rme32->adat_pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-							      snd_dma_continuous_data(GFP_KERNEL),
+							      NULL,
 							      0, RME32_MID_BUFFER_SIZE);
 			rme32->adat_pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
 		} else {