mwifiex: fix memory leak issue for sdio and pcie cards

When driver is failed to load, card pointer doesn't get
freed. We will free it in cleanup handler which is called
in failure as well as unload path.
Also, update drvdata in init/cleanup handlers instead of
register/unregister handlers.

Signed-off-by: Amitkumar Karwar <[e-mail]>
Signed-off-by: Bing Zhao <[e-mail]>
Signed-off-by: John W. Linville <[e-mail]>

drivers/net/wireless/mwifiex/pcie.c

···
 	}
 
 	mwifiex_remove_card(card->adapter, &add_remove_card_sem);
-	kfree(card);
 }
 
 static void mwifiex_pcie_shutdown(struct pci_dev *pdev)
···
 		pci_release_region(pdev, 0);
 		pci_set_drvdata(pdev, NULL);
 	}
+	kfree(card);
 }
 
 /*

drivers/net/wireless/mwifiex/sdio.c

···
 	}
 
 	mwifiex_remove_card(card->adapter, &add_remove_card_sem);
-	kfree(card);
 }
 
 /*
···
 		sdio_claim_host(card->func);
 		sdio_disable_func(card->func);
 		sdio_release_host(card->func);
-		sdio_set_drvdata(card->func, NULL);
 	}
 }
 
···
 		return ret;
 	}
 
-	sdio_set_drvdata(func, card);
 
 	adapter->dev = &func->dev;
 
···
 	const struct mwifiex_sdio_card_reg *reg = card->reg;
 	int ret;
 	u8 sdio_ireg;
+
+	sdio_set_drvdata(card->func, card);
 
 	/*
 	 * Read the HOST_INT_STATUS_REG for ACK the first interrupt got
···
 	kfree(card->mpa_rx.len_arr);
 	kfree(card->mpa_tx.buf);
 	kfree(card->mpa_rx.buf);
+	sdio_set_drvdata(card->func, NULL);
+	kfree(card);
 }
 
 /*