dmaengine: fsl-qdma: Remove a useless devm_kfree()

'status_head' is a managed resource. It will be freed automatically if
fsl_qdma_prep_status_queue(), and so fsl_qdma_probe(), fails.

Remove the redundant (and harmless) devm_kfree() call.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/6b7f60aa2b92f73b35c586886daffc1a5ac58697.1704621515.git.christophe.jaillet@wanadoo.fr


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