mtd: rawnand: qcom: Unmap the right resource upon probe failure

We currently provide the physical address of the DMA region
rather than the output of dma_map_resource() which is obviously wrong.

Fixes: 7330fc50

 ("mtd: rawnand: qcom: stop using phys_to_dma()")
Cc: stable@vger.kernel.org
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bibek Kumar Patro <quic_bibekkum@quicinc.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230913070702.12707-1-quic_bibekkum@quicinc.com