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Only do the allocation in that function, and move check for allocation
in the caller. This will it easier to split allocation and
configuration.

No functionality change in this patch.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20220126011715.28204-10-yung-chuan.liao@linux.intel.com

Signed-off-by: Vinod Koul <vkoul@kernel.org>